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18-8 & 316 Stainless Hex Head Cap Screws


18-8 & 316 Stainless Hex Head Cap Screws | U-Bolt-It

What are Hex Head Cap Screws?

Cap bolts and screws are headed and externally threaded fasteners designed for insertion through a close tolerance, internally tapped hole or to be mated with a nut. Their distinct hex head design provides a tight, secure hold during installation. They are typically used in applications requiring low, limited clearance and/or where extreme loading capacity is not the primary critical factor.

Properties of 18-8 and 316 Stainless Steel

Stainless steel 18-8 alloys and 316 stainless steel are highly sought after for their sanitary properties. These premium, high-performance materials are naturally non-corrosive, highly heat resistant, and exhibit excellent tensile strength. Due to its exceptionally smooth finish, 316 stainless steel is incredibly easy to clean and sanitize.

Common Industry Applications

Because of their superior resistance to corrosion and their hygienic properties, these stainless steel cap screws are the ideal fastening solution for:

  • Food processing equipment and facilities
  • Medical equipment and surgical devices
  • Sanitary industrial applications
  • General low-clearance fastening

Extensive Inventory and Custom Services

U-Bolt-It is a leading distributor and manufacturer of high-quality 18-8 and 316 stainless hex head cap screws. We stock a full inventory of standard and metric cap screws in a wide range of sizes and lengths. Our extensive inventory allows us to provide quick, on-time delivery of your bolts, whether you need a small quantity for short-run production or full production quantities.

We also provide custom coating and finishing services for all of our materials if required to meet your exact specifications and environmental demands.

Request a Quote Today

Have a question about our manufactured bolts or custom capabilities? Contact our team directly by phone or by using our secure online form. You can also give us a call today to speak directly with one of our fastener specialists. We look forward to speaking with you!

Types of 18-8 & 316 Stainless Hex Head Cap Screws


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SKU NAME DIAMETER THREAD LENGTH DETAILS
HHSS0250050 1/4-20 X 1/2 18-8 STAINLESS STEEL HEX HEAD CAP SCREW 1/4 20 1/2
HHSS0250062 1/4-20 X 5/8 18-8 STAINLESS STEEL HEX HEAD CAP SCREW 1/4 20 5/8
HHSS0250075 1/4-20 X 3/4 18-8 STAINLESS STEEL HEX HEAD CAP SCREW 1/4 20 3/4
HHSS0250087 1/4-20 X 7/8 18-8 STAINLESS STEEL HEX HEAD CAP SCREW 1/4 20 7/8
HHSS0250100 1/4-20 X 1 18-8 STAINLESS STEEL HEX HEAD CAP SCREW 1/4 20 1
HHSS0250125 1/4-20 X 1 1/4 18-8 STAINLESS STEEL HEX HEAD CAP SCREW 1/4 20 1 1/4
HHSS0250150 1/4-20 X 1 1/2 18-8 STAINLESS STEEL HEX HEAD CAP SCREW 1/4 20 1 1/2
HHSS0250175 1/4-20 X 1 3/4 18-8 STAINLESS STEEL HEX HEAD CAP SCREW 1/4 20 1 3/4
HHSS0250200 1/4-20 X 2 18-8 STAINLESS STEEL HEX HEAD CAP SCREW 1/4 20 2
HHSS0250225 1/4-20 X 2 1/4 18-8 STAINLESS STEEL HEX HEAD CAP SCREW 1/4 20 2 1/4
HHSS0250250 1/4-20 X 2 1/2 18-8 STAINLESS STEEL HEX HEAD CAP SCREW 1/4 20 2 1/2
HHSS0250275 1/4-20 X 2 3/4 18-8 STAINLESS STEEL HEX HEAD CAP SCREW 1/4 20 2 3/4
HHSS0250300 1/4-20 X 3 18-8 STAINLESS STEEL HEX HEAD CAP SCREW 1/4 20 3
HHSS0250325 1/4-20 X 3 1/4 18-8 STAINLESS STEEL HEX HEAD CAP SCREW 1/4 20 3 1/4
HHSS0250350 1/4-20 X 3 1/2 18-8 STAINLESS STEEL HEX HEAD CAP SCREW 1/4 20 3 1/2
HHSS0250375 1/4-20 X 3 3/4 18-8 STAINLESS STEEL HEX HEAD CAP SCREW 1/4 20 3 3/4
HHSS0250400 1/4-20 X 4 18-8 STAINLESS STEEL HEX HEAD CAP SCREW 1/4 20 4
HHSS0250425 1/4-20 X 4 1/4 18-8 STAINLESS STEEL HEX HEAD CAP SCREW 1/4 20 4 1/4
HHSS0250450 1/4-20 X 4 1/2 18-8 STAINLESS STEEL HEX HEAD CAP SCREW 1/4 20 4 1/2
HHSS0250475 1/4-20 X 4 3/4 18-8 STAINLESS STEEL HEX HEAD CAP SCREW 1/4 20 4 3/4
HHSS0250500 1/4-20 X 5 18-8 STAINLESS STEEL HEX HEAD CAP SCREW 1/4 20 5
HHSS0250525 1/4-20 X 5 1/4 18-8 STAINLESS STEEL HEX HEAD CAP SCREW 1/4 20 5 1/4
HHSS0250550 1/4-20 X 5 1/2 18-8 STAINLESS STEEL HEX HEAD CAP SCREW 1/4 20 5 1/2
HHSS0250575 1/4-20 X 5 3/4 18-8 STAINLESS STEEL HEX HEAD CAP SCREW 1/4 20 5 3/4
HHSS0250600 1/4-20 X 6 18-8 STAINLESS STEEL HEX HEAD CAP SCREW 1/4 20 6
HHSS0250700 1/4-20 X 7 18-8 STAINLESS STEEL HEX HEAD CAP SCREW 1/4 20 7
HHSS0250800 1/4-20 X 8 18-8 STAINLESS STEEL HEX HEAD CAP SCREW 1/4 20 8
HHSS0500050 1/2-13 X 1/2 18-8 STAINLESS STEEL HEX HEAD CAP SCREW 1/2 13 1/2
HHSS0500075 1/2-13 X 3/4 18-8 STAINLESS STEEL HEX HEAD CAP SCREW 1/2 13 3/4
HHSS0500087 1/2-13 X 7/8 18-8 STAINLESS STEEL HEX HEAD CAP SCREW 1/2 13 7/8
HHSS0500100 1/2-13 X 1 18-8 STAINLESS STEEL HEX HEAD CAP SCREW 1/2 13 1
HHSS0500125 1/2-13 X 1 1/4 18-8 STAINLESS STEEL HEX HEAD CAP SCREW 1/2 13 1 1/4
HHSS0500150 1/2-13 X 1 1/2 18-8 STAINLESS STEEL HEX HEAD CAP SCREW 1/2 13 1 1/2
HHSS0500175 1/2-13 X 1 3/4 18-8 STAINLESS STEEL HEX HEAD CAP SCREW 1/2 13 1 3/4
HHSS0500200 1/2-13 X 2 18-8 STAINLESS STEEL HEX HEAD CAP SCREW 1/2 13 2
HHSS0500225 1/2-13 X 2 1/4 18-8 STAINLESS STEEL HEX HEAD CAP SCREW 1/2 13 2 1/4
HHSS0500250 1/2-13 X 2 1/2 18-8 STAINLESS STEEL HEX HEAD CAP SCREW 1/2 13 2 1/2
HHSS0500275 1/2-13 X 2 3/4 18-8 STAINLESS STEEL HEX HEAD CAP SCREW 1/2 13 2 3/4
HHSS0500300 1/2-13 X 3 18-8 STAINLESS STEEL HEX HEAD CAP SCREW 1/2 13 3
HHSS0500325 1/2-13 X 3 1/4 18-8 STAINLESS STEEL HEX HEAD CAP SCREW 1/2 13 3 1/4
HHSS0500350 1/2-13 X 3 1/2 18-8 STAINLESS STEEL HEX HEAD CAP SCREW 1/2 13 3 1/2
HHSS0500375 1/2-13 X 3 3/4 18-8 STAINLESS STEEL HEX HEAD CAP SCREW 1/2 13 3 3/4
HHSS0500400 1/2-13 X 4 18-8 STAINLESS STEEL HEX HEAD CAP SCREW 1/2 13 4
HHSS0500425 1/2-13 X 4 1/4 18-8 STAINLESS STEEL HEX HEAD CAP SCREW 1/2 13 4 1/4
HHSS0500450 1/2-13 X 4 1/2 18-8 STAINLESS STEEL HEX HEAD CAP SCREW 1/2 13 4 1/2
HHSS0500475 1/2-13 X 4 3/4 18-8 STAINLESS STEEL HEX HEAD CAP SCREW 1/2 13 4 3/4
HHSS0500500 1/2-13 X 5 18-8 STAINLESS STEEL HEX HEAD CAP SCREW 1/2 13 5
HHSS0500550 1/2-13 X 5 1/2 18-8 STAINLESS STEEL HEX HEAD CAP SCREW 1/2 13 5 1/2
HHSS0500600 1/2-13 X 6 18-8 STAINLESS STEEL HEX HEAD CAP SCREW 1/2 13 6
HHSS0500650 1/2-13 X 6 1/2 18-8 STAINLESS STEEL HEX HEAD CAP SCREW 1/2 13 6 1/2