UNC/UNF 304/316 Imperial Machine Screw Stainless Steel Countersunk Flat Head Hex Socket Screw

Regular price $1.28 USD

Regular price ~~$1.28 USD~~ Sale price $1.28 USD

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Color classification 2 #-56 * 5/32 (200pcs) 304 materialVariant sold out or unavailable 2 #-56 * 3/16 (200pcs) 304 materialVariant sold out or unavailable 2 #-56 * 1/4 (200pcs) 304 materialVariant sold out or unavailable 2 #-56 * 5/16 (200pcs) 304 materialVariant sold out or unavailable 2 #-56 * 3/8 (200pcs) 304 materialVariant sold out or unavailable 2 #-56 * 1/2 (200pcs) 304 materialVariant sold out or unavailable 2 #-56 * 5/8 (100pcs) 304 materialVariant sold out or unavailable 2 #-56 * 3/4 (100pcs) 304 materialVariant sold out or unavailable 2 #-56 * 1 (100pcs) 304 materialVariant sold out or unavailable 4 #-40 * 3/16 (200pcs) 304 materialVariant sold out or unavailable 4 #-40 * 1/4 (200pcs) 304 materialVariant sold out or unavailable 4 #-40 * 5/16 (200pcs) 304 materialVariant sold out or unavailable 4 #-40 * 3/8 (200pcs) 304 materialVariant sold out or unavailable 4 #-40 * 7/16 (500pcs) 304Variant sold out or unavailable 4 #-40 * 1/2 (200pcs) 304 materialVariant sold out or unavailable 4 #-40 * 9/16 (500pcs) 304Variant sold out or unavailable 4 #-40 * 5/8 (100pcs) 304 materialVariant sold out or unavailable 4 #-40 * 3/4 (100pcs) 304 materialVariant sold out or unavailable 4 #-40 * 1 (100pcs) 304 materialVariant sold out or unavailable 4 #-40 * 1-1/8 (100pcs) 304 materialVariant sold out or unavailable 4 #-40 * 1-1/4 (100pcs) 304 materialVariant sold out or unavailable 4 #-40 * 1-3/8 (100pcs) 304 materialVariant sold out or unavailable 4 #-40 * 1-1/2 (50pcs) 304 materialVariant sold out or unavailable 4 #-40 * 1-5/8 (50pcs) 304 materialVariant sold out or unavailable 4 #-40 * 1-3/4 (50pcs) 304 materialVariant sold out or unavailable 4#-40*1-7/8 (50 pieces) 304 materialVariant sold out or unavailable 4#-40*2 (100 pieces) 304 materialVariant sold out or unavailable 5#-40*3/8 (500 pieces) 304Variant sold out or unavailable 5#-40*1/2 (500 pieces) 304Variant sold out or unavailable 5#-40*9/16 (500 pieces) 304Variant sold out or unavailable 5#-40*5/8 (500 pieces) 304Variant sold out or unavailable 6#-32*1/4 (200 pieces) 304 materialVariant sold out or unavailable 6#-32*5/16 (200 pieces) 304 materialVariant sold out or unavailable 6#-32*3/8 (100 pieces) 304 materialVariant sold out or unavailable 6#-32*3/8 (1000 pieces) 304 yellow resistant to fallVariant sold out or unavailable 6#-32*7/16 (500 pieces) 304 materialVariant sold out or unavailable 6#-32*1/2 (100 pieces) 304 materialVariant sold out or unavailable 6#-32*9/16 (200 pieces) 304 materialVariant sold out or unavailable 6#-32*5/8 (100 pieces) 304 materialVariant sold out or unavailable 6#-32*3/4 (100 pieces) 304 materialVariant sold out or unavailable 6#-32*1 (100 pieces) 304 materialVariant sold out or unavailable 6#-32*1-1/4 (100 pieces) 304 materialVariant sold out or unavailable 6#-32*1-1/2 (50 pieces) 304 materialVariant sold out or unavailable 8#-32*1/4 (100 pieces) 304 materialVariant sold out or unavailable 8#-32*5/16 (100 pieces) 304 materialVariant sold out or unavailable 8#-32*3/8 (100 pieces) 304 materialVariant sold out or unavailable 8#-32*7/16 (100 pieces) 304 materialVariant sold out or unavailable 8#-32*1/2 (100 pieces) 304 materialVariant sold out or unavailable 8#-32*5/8 (100 pieces) 304 materialVariant sold out or unavailable 8#-32*3/4 (50 pieces) 304 materialVariant sold out or unavailable 8#-32*7/8 (50 pieces) 304 materialVariant sold out or unavailable 8#-32*1 (50 pieces) 304 materialVariant sold out or unavailable 8#-32*1-1/8 (100 pieces) 304 materialVariant sold out or unavailable 8#-32*1-1/4 (50 pieces) 304 materialVariant sold out or unavailable 8#-32*1-3/8 (50 pieces) 304 materialVariant sold out or unavailable 8#-32*1-1/2 (50 pieces) 304 materialVariant sold out or unavailable 8#-32*1-3/4 (50 pieces) 304 materialVariant sold out or unavailable 8#-32*2 (20 pieces) 304 materialVariant sold out or unavailable 10#-24*5/16 (50 pieces) 304 materialVariant sold out or unavailable 10#-24*3/8 (50 pieces) 304 materialVariant sold out or unavailable 10#-24*1/2 (50 pieces) 304 materialVariant sold out or unavailable 10#-24*5/8 (50 pieces) 304 materialVariant sold out or unavailable 10#-24*3/4 (50 pieces) 304 materialVariant sold out or unavailable 10#-24*1 (50 pieces) 304 materialVariant sold out or unavailable 10#-24*1-1/4 (50 pieces) 304 materialVariant sold out or unavailable 10#-24*1-1/2 (20 pieces) 304 materialVariant sold out or unavailable 10#-24*2 (20 pieces) 304 materialVariant sold out or unavailable 10#-24*3-1/2 (20 pieces) 304 materialVariant sold out or unavailable 10#-32*5/16 (50 pieces) 304 materialVariant sold out or unavailable 10#-32*3/8 (50 pieces) 304 materialVariant sold out or unavailable 10#-32*1/2 (50 pieces) 304 materialVariant sold out or unavailable 10#-32*5/8 (50 pieces) 304 materialVariant sold out or unavailable 10#-32*3/4 (50 pieces) 304 materialVariant sold out or unavailable 10#-32*1 (50 pieces) 304 materialVariant sold out or unavailable 10#-32*1-1/4 (50 pieces) 304 materialVariant sold out or unavailable 10#-32*1-1/2 (50 pieces) 304 materialVariant sold out or unavailable 12#-24*3/8 (200 pieces) 304Variant sold out or unavailable 12#-24*7/16 (200 pieces) 304Variant sold out or unavailable 12#-24*1/2 (200 pieces) 304Variant sold out or unavailable 12#-24*9/16 (200 pieces) 304Variant sold out or unavailable 12#-24*5/8 (200 pieces) 304Variant sold out or unavailable 1/4-20*3/8 (50 pieces) 304 materialVariant sold out or unavailable 1/4-20*7/16 (50 pieces) 304 materialVariant sold out or unavailable 1/4-20*1/2 (50 pieces) 304 materialVariant sold out or unavailable 1/4-20*5/8 (50 pieces) 304 materialVariant sold out or unavailable 1/4-20*3/4 (50 pieces) 304 materialVariant sold out or unavailable 1/4-20*7/8 (20 pieces) 304 materialVariant sold out or unavailable 1/4-20*1 (20 pieces) 304 materialVariant sold out or unavailable 1/4-20*1-1/8 (20 pieces) 304 materialVariant sold out or unavailable 1/4-20*1-1/4 (20 pieces) 304 materialVariant sold out or unavailable 1/4-20*1-3/8 (20 pieces) 304 materialVariant sold out or unavailable 1/4-20*1-1/2 (20 pieces) 304 materialVariant sold out or unavailable 1/4-20*1-5/8 (20 pieces) 304 materialVariant sold out or unavailable 1/4-20*1-3/4 (10 pieces) 304 materialVariant sold out or unavailable 1/4-20*2 (10 pieces) 304 materialVariant sold out or unavailable 1/4-20*2-3/16 (20 pieces) 304 materialVariant sold out or unavailable 1/4-20*2-1/4 (10 pieces) 304 materialVariant sold out or unavailable 1/4-20*2-3/8 (10 pieces) 304 materialVariant sold out or unavailable 1/4-20*2-1/2 (10 pieces) 304 materialVariant sold out or unavailable 1/4-20*2-5/8 (10 pieces) 304 materialVariant sold out or unavailable 1/4-20*2-3/4 (10 pieces) 304 materialVariant sold out or unavailable 1/4-20*3 (10 pieces) 304 materialVariant sold out or unavailable 1/4-20*3-1/4 (10 pieces) 304 materialVariant sold out or unavailable 1/4-20*3-1/2 (10 pieces) 304 materialVariant sold out or unavailable 1/4-20*3-3/4 (10 pieces) 304 materialVariant sold out or unavailable 1/4-20*4 (10 pieces) 304 materialVariant sold out or unavailable 5/16-18*1/2 (20 pieces) 304 materialVariant sold out or unavailable 5/16-18*5/8 (20 pieces) 304 materialVariant sold out or unavailable 5/16-18*22/35 (20 pieces) 304 materialVariant sold out or unavailable 5/16-18*3/4 (20 pieces) 304 materialVariant sold out or unavailable 5/16-18*7/8 (10 pieces) 304 materialVariant sold out or unavailable 5/16-18*1 (10 pieces) 304 materialVariant sold out or unavailable 5/16-18*1-1/8 (10 pieces) 304 materialVariant sold out or unavailable 5/16-18*1-1/4 (10 pieces) 304 materialVariant sold out or unavailable 5/16-18*1-3/8 (10 pieces) 304 materialVariant sold out or unavailable 5/16-18*1-1/2 (10 pieces) 304 materialVariant sold out or unavailable 5/16-18*1-5/8 (10 pieces) 304 materialVariant sold out or unavailable 5/16-18*1-3/4 (10 pieces) 304 materialVariant sold out or unavailable 5/16-18*1-7/8 (10 pieces) 304 materialVariant sold out or unavailable 5/16-18*2 (10 pieces) 304 materialVariant sold out or unavailable 5/16-18*2-1/4 (10 pieces) 304 materialVariant sold out or unavailable 5/16-18*2-3/8 (10 pieces) 304 materialVariant sold out or unavailable 5/16-18*2-1/2 (10 pieces) 304 materialVariant sold out or unavailable 5/16-18*2-5/8 (10 pieces) 304 materialVariant sold out or unavailable 5/16-18*2-3/4 (10 pieces) 304 materialVariant sold out or unavailable 5/16-18*3 (10 pieces) 304 materialVariant sold out or unavailable 5/16-18*3-1/4 (5 pieces) 304 materialVariant sold out or unavailable 5/16-18*3-1/2 (5 pieces) 304 materialVariant sold out or unavailable 5/16-18*3-3/4 (5 pieces) 304 materialVariant sold out or unavailable 5/16-18*4 (5 pieces) 304 materialVariant sold out or unavailable 5/16-18*4-1/4 (10 pieces) 304 materialVariant sold out or unavailable 5/16-18*4-1/2 (10 pieces) 304 materialVariant sold out or unavailable 5/16-18*4-3/4 (10 pieces) 304 materialVariant sold out or unavailable 5/16-18*5 (10 pieces) 304 materialVariant sold out or unavailable 5/16-18*5-1/4 (10 pieces) 304 materialVariant sold out or unavailable 5/16-18*5-1/2 (10 pieces) 304 materialVariant sold out or unavailable 5/16-18*5-3/4 (10 pieces) 304 materialVariant sold out or unavailable 5/16-18*6 (10 pieces) 304 materialVariant sold out or unavailable 3/8-16*5/8 (10 pieces) 304 materialVariant sold out or unavailable 3/8-16*3/4 (10 pieces) 304 materialVariant sold out or unavailable 3/8-16*7/8 (10 pieces) 304 materialVariant sold out or unavailable 3/8-16*1 (10 pieces) 304 materialVariant sold out or unavailable 3/8-16*1-1/8 (10 pieces) 304 materialVariant sold out or unavailable 3/8-16*1-1/4 (10 pieces) 304 materialVariant sold out or unavailable 3/8-16*1-3/8 (5 pieces) 304 materialVariant sold out or unavailable 3/8-16 * 1-1/2 (5 pieces) 304 materialVariant sold out or unavailable 3/8-16 * 1-5/8 (5 pieces) 304 materialVariant sold out or unavailable 3/8-16 * 1-3/4 (5 pieces) 304 materialVariant sold out or unavailable 3/8-16 * 1-7/8 (5 pieces) 304 materialVariant sold out or unavailable 3/8-16 * 2 (5pcs) 304 materialVariant sold out or unavailable 3/8-16 * 2-1/4 (5 pieces) 304 materialVariant sold out or unavailable 3/8-16 * 2-3/8 (5 pieces) 304 materialVariant sold out or unavailable 3/8-16 * 2-1/2 (5 pieces) 304 materialVariant sold out or unavailable 3/8-16 * 2-5/8 (5 pieces) 304 materialVariant sold out or unavailable 3/8-16 * 2-3/4 (5 pieces) 304 materialVariant sold out or unavailable 3/8-16 * 3 (5 pieces) 304 materialVariant sold out or unavailable 3/8-16 * 3-1/4 (5 pieces) 304 materialVariant sold out or unavailable 3/8-16 * 3-1/2 (5 pieces) 304 materialVariant sold out or unavailable 3/8-16 * 3-3/4 (2pcs) 304 materialVariant sold out or unavailable 3/8-16 * 4 (2pcs) 304 materialVariant sold out or unavailable 1/2-13 * 3/4 (10pcs) 304 materialVariant sold out or unavailable 1/2-13 * 1 (10pcs) 304 materialVariant sold out or unavailable 1/2-13 * 1-1/4 (5 pieces) 304 materialVariant sold out or unavailable 1/2-13 * 1-1/2 (5 pieces) 304 materialVariant sold out or unavailable 1/2-13 * 1-3/4 (5 pieces) 304 materialVariant sold out or unavailable 1/2-13 * 2 (5pcs) 304 materialVariant sold out or unavailable The following 316 material series ==========Variant sold out or unavailable 2 #-56 * 5/32 (500pcs) 316 materialVariant sold out or unavailable 2 #-56 * 3/16 (500pcs) 316 materialVariant sold out or unavailable 2 #-56 * 1/4 (500pcs) 316 materialVariant sold out or unavailable 2 #-56 * 5/16 (500pcs) 316 materialVariant sold out or unavailable 2 #-56 * 3/8 (500pcs) 316 materialVariant sold out or unavailable 2 #-56 * 1/2 (200pcs) 316 materialVariant sold out or unavailable 2 #-56 * 5/8 (200pcs) 316 materialVariant sold out or unavailable 2 #-56 * 7/8 (200pcs) 316 materialVariant sold out or unavailable 2#-56*1 (200 pieces) 316 materialVariant sold out or unavailable 4#-40*3/16 (200 pieces) 316 materialVariant sold out or unavailable 4#-40*1/4 (200 pieces) 316 materialVariant sold out or unavailable 4#-40*5/16 (200 pieces) 316 materialVariant sold out or unavailable 4#-40*3/8 (200 pieces) 316 materialVariant sold out or unavailable 4#-40*1/2 (200 pieces) 316 materialVariant sold out or unavailable 4#-40*5/8 (200 pcs) 316 materialVariant sold out or unavailable 4#-40*3/4 (200 pieces) 316 materialVariant sold out or unavailable 4#-40*7/8 (200 pieces) 316 materialVariant sold out or unavailable 4#-40*1 (100 pieces) 316 materialVariant sold out or unavailable 4#-40*1-1/8 (100 pieces) 316 materialVariant sold out or unavailable 4#-40*1-1/4 (100 pieces) 316 materialVariant sold out or unavailable 4#-40*1-3/8 (100 pieces) 316 materialVariant sold out or unavailable 4#-40*1-1/2 (100 pieces) 316 materialVariant sold out or unavailable 4#-40*1-5/8 (100 pieces) 316 materialVariant sold out or unavailable 4#-40*1-3/4 (100 pieces) 316 materialVariant sold out or unavailable 4#-40*1-7/8 (100 pieces) 316 materialVariant sold out or unavailable 4#-40*2 (100 pieces) 316 materialVariant sold out or unavailable 6#-32*1/4()316 materialVariant sold out or unavailable 6#-32*3/8()316 materialVariant sold out or unavailable 6#-32*5/8()316 materialVariant sold out or unavailable 6#-32*3/4()316 materialVariant sold out or unavailable 6#-32*7/8()316 materialVariant sold out or unavailable 6#-32*1-1/8()316 materialVariant sold out or unavailable 6#-32*1-1/4()316 materialVariant sold out or unavailable 6#-32*1-3/8()316 materialVariant sold out or unavailable 6#-32*1-1/2()316 materialVariant sold out or unavailable 6#-32*1-5/8()316 materialVariant sold out or unavailable 6#-32*1-3/4()316 materialVariant sold out or unavailable 6#-32*1-7/8()316 materialVariant sold out or unavailable 6#-32*2()316 materialVariant sold out or unavailable 8#-32*1/4 (100 pieces) 316 materialVariant sold out or unavailable 8#-32*5/16 (100 pieces) 316 materialVariant sold out or unavailable 8#-32*3/8 (100 pieces) 316 materialVariant sold out or unavailable 8#-32*1/2 (100 pieces) 316 materialVariant sold out or unavailable 8#-32*5/8 (100 pieces) 316 materialVariant sold out or unavailable 8#-32*3/4 (100 pieces) 316 materialVariant sold out or unavailable 8#-32*7/8 (100 pcs) 316 materialVariant sold out or unavailable 8#-32*1 (100 pieces) 316 materialVariant sold out or unavailable 8#-32*1-1/8 (100 pieces) 316 materialVariant sold out or unavailable 8#-32*1-1/4 (100 pieces) 316 materialVariant sold out or unavailable 8#-32*1-3/8 (100 pieces) 316 materialVariant sold out or unavailable 8#-32*1-1/2 (50 pieces) 316 materialVariant sold out or unavailable 8#-32*1-5/8 (50 pieces) 316 materialVariant sold out or unavailable 8#-32*1-3/4 (50 pieces) 316 materialVariant sold out or unavailable 8#-32*1-7/8 (50 pieces) 316 materialVariant sold out or unavailable 8#-32*2 (50 pieces) 316 materialVariant sold out or unavailable 8#-32*2-3/8 (50 pieces) 316 materialVariant sold out or unavailable 8#-32*2-1/2 (50 pieces) 316 materialVariant sold out or unavailable 8#-32*2-5/8 (50 pieces) 316 materialVariant sold out or unavailable 10#-24*3/8 (100 pieces) 316 materialVariant sold out or unavailable 10#-24*1/2 (100 pieces) 316 materialVariant sold out or unavailable 10#-24*1 (50 pieces) 316 materialVariant sold out or unavailable 1/4-20*5/8 (50 pieces) 316 materialVariant sold out or unavailable 1/4-20*3/4 (50 pieces) 316 materialVariant sold out or unavailable 1/4-20*7/8 (400 pieces) 316 materialVariant sold out or unavailable 1/4-20*1 (50 pieces) 316 materialVariant sold out or unavailable 1/4-20*1-1/8 (50 pieces) 316 materialVariant sold out or unavailable 1/4-20*1-1/2 (20 pieces) 316 materialVariant sold out or unavailable 1/4-20*2-3/8 (20 pieces) 316 materialVariant sold out or unavailable 5/16-18*3/4 (20 pieces) 316 materialVariant sold out or unavailable 5/16-18*7/8 (20 pieces) 316 materialVariant sold out or unavailable 5/16-18*1-1/4 (20 pieces) 316 materialVariant sold out or unavailable 3/8-16*5/8 (10 pieces) 316 materialVariant sold out or unavailable 3/8-16*7/8 (10 pieces) 316 materialVariant sold out or unavailable 3/8-16*1 (10 pieces) 316 materialVariant sold out or unavailable 3/8-16*1-1/8 (10 pieces) 316 materialVariant sold out or unavailable 3/8-16*1-1/4 (10 pieces) 316 materialVariant sold out or unavailable 3/8-16*1-3/8 (10 pieces) 316 materialVariant sold out or unavailable 3/8-16*1-1/2 (10 pieces) 316 materialVariant sold out or unavailable 3/8-16*1-5/8 (10 pieces) 316 materialVariant sold out or unavailable 3/8-16*1-3/4 (10 pieces) 316 materialVariant sold out or unavailable 3/8-16*1-7/8 (10 pieces) 316 materialVariant sold out or unavailable 3/8-16*2 (5 pieces) 316 materialVariant sold out or unavailable 3/8-16*2-1/4 (5 pieces) 316 materialVariant sold out or unavailable 3/8-16*2-3/8 (5 pieces) 316 materialVariant sold out or unavailable

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304/316 stainless steel UNC/UNF imperial machine screws are precision-engineered fasteners featuring a countersunk flat head and hex socket drive, designed to meet American imperial thread standards. Crafted from premium 304 and 316 stainless steel, these screws offer exceptional corrosion resistance—316 grade excels in harsh marine, chemical, and high-moisture environments, while 304 grade delivers reliable performance for general industrial and commercial applications.

The countersunk flat head design enables a flush, smooth finish when fully installed, eliminating protrusions and ensuring compatibility with surface-mounted components. The hex socket drive provides a secure grip for easy installation and removal with standard tools, balancing operational efficiency with stable fixation. Compatible with UNC (Unified National Coarse) and UNF (Unified National Fine) threads, they cater to diverse imperial specification needs across industries.

Ideal for automotive assemblies, industrial machinery, hardware installations, and marine equipment, these screws resist rust, oxidation, and wear. Their versatile design and dual-material option make them a go-to choice for both indoor and outdoor applications requiring precision, durability, and compliance with imperial standards.

Core Features & Advantages

304/316 Stainless Steel: Dual-material option for tailored corrosion resistance (316 for harsh environments).
UNC/UNF Imperial Compatibility: Fits American coarse/fine imperial threads for versatile use.
Countersunk Flat Head: Flush installation for smooth surfaces and no protrusions.
Hex Socket Drive: Secure grip and effortless installation with standard tools.
Industrial-Grade Durability: Resists wear, rust, and oxidation for long-term performance.

Key Specifications

Material: 304 Stainless Steel, 316 Stainless Steel
Thread Standards: UNC (Unified National Coarse), UNF (Unified National Fine)
Head Type: Countersunk Flat Head
Drive Type: Hex Socket (Hexagonal)
Category: Imperial Machine Screw
Applications: Automotive, Industrial Machinery, Marine Equipment, Hardware Installations
Performance: Corrosion-Resistant, Flush Fit, Wear-Resistant, Precision Fixation