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Home / Connectors and Fasteners / 304/316/201 Stainless Steel Hex Socket Screw Set with Cylinder Head, Flat Washer, and Spring Washer (M3/M4/M5/M6/M8)
Connectors and Fasteners

Attributes

Brand -
Category Industrial Small Parts / Connectors and Fasteners
Origin -
Material Grade 304/316/201 Stainless Steel
Head Type Cylinder Head
Drive Type Hex Socket (Allen)
Thread Size M3, M4, M5, M6, M8
Surface Finish Polished
Package Type Wholesale Storage Box
Included Components Screw, Flat Washer, Spring Washer
Thread Standard ISO Metric Coarse
Hardness HRC 20-28
Application Electronics & Machinery Assembly

5 reviews

A

Anonymous

Apr 17, 2026

Rating: 4/5

Solid hardware

Good for general use. Wish there were more M3 screws in the pack.

A

Anonymous

Mar 27, 2026

Rating: 5/5

Excellent kit

Using these for electronics enclosures. No rust issues so far.

A

Anonymous

Mar 21, 2026

Rating: 5/5

Perfect for repair work

Great assortment of sizes. The washers included save a lot of time during assembly.

A

Anonymous

Feb 23, 2026

Rating: 5/5

Fast delivery

Arrived well organized. The hex sockets are precise.

A

Anonymous

Jan 24, 2026

Rating: 4/5

Good quality steel

Solid 304 stainless steel. One size was low in stock but overall good value.

5 FAQ

Q: Are these threads coarse or fine?

A: These screws feature standard ISO metric coarse threads.

Q: What hex key size is needed for M5?

A: Typically an M5 hex socket screw requires a 4mm Allen key.

Q: Is this suitable for outdoor use?

A: 304 and 316 grades offer good corrosion resistance for outdoor environments.

Q: Can I purchase individual sizes?

A: This listing is for the wholesale pack only. Individual sizes are not sold separately.

Q: Are the washers also stainless steel?

A: Yes, both the flat and spring washers match the screw material grade.

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