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Bolts 1/2-13 x 3-3/4 HXBT SS (Box 50)
Features
- 18-8 and 316 stainless steel cap screws are both made from austenitic alloy
- Used in products that require general atmospheric corrosion resistance, such as chemical and food-processing equipment. Some chemical environments may require special corrosion resistant materials and precautions.
Additional Notes
- Other sizes and quantities available by request
Manufacturer Resources
Product Specs
- Arra Compliant:
- C
- Buy American Compliant:
- C
- Division:
- Electrical H1
- Fastener Head Height:
- 16-May in.
- Fastener Head Type:
- Hex
- Fastener Head Width:
- 0.736 - 0.750 in.
- Fastener Height:
- 0.302 - 0.323
- Fastener Length:
- 3/3/04
- Fastener Width:
- 0.840 - 0.866
- Hardness:
- Rockwell B95-C32
- Language Code:
- EN
- Neurspe:
- https://ideadigitalasset.com/DAMRoot/Original/10035/11237_ID-SPE-v1-ID-SPE-v1-Hex_Bolt_Dom_18-8_SS_316_SS.pdf
- Order Minimum Imperial:
- 50
- Order Minimum Uom Imperial:
- CT
- Outside Diameter:
- 0.4930 - 0.5000 IN
- Pack Type:
- Box
- Product Group:
- Fasteners
- Product Height:
- 3.25 in
- Product Length:
- 7.25 in
- Product Weight:
- 5067 g
- Product Width:
- 171.45 MM
- Sub Division:
- Electrical-E H2
- Tensile Strength:
- 100000 - 150000 psi minimum
- Thread Per Inch:
- 13
- Wrenching Height:
- 0.215
- Yield Strength:
- 65000 psi minimum
- Department:
- Electrical
- Product Subgroup:
- Bolts
- Product Type:
- Cap Bolt
- Type2:
- Cap Bolt
- Series:
- SBHC and JSBHC
- Product Details:
- Cap Bolt
- Product Material:
- 18-8 Stainless Steel
Metallics SBH357 – Frequently Asked Questions
1) Will stainless hex bolts hold up outdoors or in a washdown area?
The SBH357 is 18-8 austenitic stainless, which is specified where general atmospheric corrosion resistance is needed, including chemical and food-processing equipment. For aggressive chemical exposure, 18-8 may not be enough and a 316 or other specialty alloy should be used instead.
2) How strong is an 18-8 stainless 1/2-13 bolt compared with a plated grade 5?
Tensile strength on these bolts is 100,000 to 150,000 psi minimum with 65,000 psi minimum yield, and hardness runs Rockwell B95 to C32. That is a corrosion-first fastener, not a high-strength one; grade 5 and grade 8 steel bolts carry higher tensile and yield. If the connection is structural and load-governed rather than corrosion-governed, spec a graded carbon steel bolt.
3) What wrench or socket size fits these 1/2-13 stainless hex bolts?
Across the flats the hex head measures 0.736 to 0.750 inch, which is a 3/4 inch wrench or socket. Corner-to-corner the head runs 0.840 to 0.866 inch, worth knowing if you are working in a tight counterbore or a crowded strut channel.
4) How many bolts come in a box of Metallics SBH357?
They ship 50 to a box, and 50 count is the order minimum, so that box is the single buying unit. Box weight is listed at 5067 g.
5) Do these bolts meet Buy American or ARRA requirements for a public project?
The SBH357 is flagged compliant for both Buy American and ARRA, which is what a government, education, or healthcare procurement file usually needs on a fastener line item.
6) Are nuts and washers included with the Metallics SBH357 bolts?
Bolts only. The box contains 50 of the 1/2-13 x 3-3/4 hex cap bolts and nothing else, so order matching 1/2-13 stainless hex nuts and flat washers separately. Mixing plated carbon steel nuts onto stainless bolts in a wet location invites galvanic corrosion, so keep the hardware all stainless.
7) Is a stainless hex cap bolt the right choice for anchoring electrical strut and equipment?
For strut, racks, and enclosure mounting where the hardware sees weather or washdown, 18-8 stainless like this 1/2-13 x 3-3/4 bolt avoids the rust streaking and seized threads you get from plated carbon steel. Where the connection is purely structural and dry, a graded carbon steel bolt carries more load for the same diameter. Pick on exposure first, load second.
8) Can I get this Metallics hex bolt in a different length or diameter?
The SBH357 itself is fixed at 1/2-13 x 3-3/4 in 18-8 stainless. Other sizes and pack quantities in the SBHC and JSBHC hex cap bolt series are available by request, so if you need a shorter grip or a 316 stainless version, ask for the size rather than buying this one and cutting it.
How fast can I get the Metallics SBH357 delivered?
Most orders ship the same day from our distribution partners, with quick delivery throughout the
continental
U.S.
Need it urgently? Contact Us for expedited shipping options.
Can I return it if it doesn’t work for me?
Yes—ZenSupply offers a hassle-free return policy. If the product isn’t the right fit,
reach out to our support team for a return authorization or setup a return by following our return instructions.
Does the Metallics SBH357 come with a warranty?
Absolutely. The Metallics SBH357 is backed by a manufacturer’s warranty.
For full warranty terms, check the product documentation or Contact Us.
How do I get technical support or installation help for the Metallics SBH357?
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selection,
installation tips, and troubleshooting. Contact Us
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