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Bolts 5/16-24 x 2-1/2 HXBT SS (Jar 100)
Features
- 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.
- 18-8 and 316 stainless steel cap screws are both made from austenitic alloy
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:
- 13/64 in.
- Fastener Head Type:
- Hex
- Fastener Head Width:
- 0.489 - 0.500 in.
- Fastener Height:
- 0.195 - 0.211
- Fastener Length:
- 2/1/02
- Fastener Width:
- 0.557 - 0.577
- 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:
- 100
- Order Minimum Uom Imperial:
- CT
- Outside Diameter:
- 0.3065 - 0.3125 IN
- Pack Type:
- Jar
- Product Group:
- Fasteners
- Product Height:
- 7.25 in
- Product Length:
- 4.5 in
- Product Weight:
- 2840 g
- Product Width:
- 114.3 MM
- Sub Division:
- Electrical-E H2
- Tensile Strength:
- 100000 - 150000 psi minimum
- Thread Per Inch:
- 24
- Yield Strength:
- 65000 psi minimum
- Department:
- Electrical
- Product Subgroup:
- Bolts
- Product Type:
- Hexagonal Bolt
- Type2:
- Hexagonal Bolt
- Series:
- SBHC and JSBHC
- Product Details:
- Hexagonal Bolt
- Product Material:
- 18-8 Stainless Steel
Metallics JSBH305 – Frequently Asked Questions
1) Is the Metallics JSBH305 hex bolt a coarse or fine thread?
Fine thread. The JSBH305 is a 5/16-24 bolt, 24 threads per inch, so it mates with 5/16-24 fine nuts and tapped holes only. A standard 5/16-18 coarse nut will not run on it.
2) Will stainless hex bolts hold up outdoors or in a wash-down area?
The JSBH305 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 (chlorides, salt spray) 18-8 may not be enough and a 316 stainless fastener is the better call.
3) Do these bolts meet Buy American or ARRA requirements for a federal or institutional job?
The JSBH305 is flagged compliant for both Buy American and ARRA, which is what a government, school or healthcare procurement spec usually asks for. Country of origin is listed as multiple, so confirm the origin marking on the jar you receive if your submittal requires it documented.
4) What wrench or socket size fits the head on these 5/16-24 stainless hex bolts?
The hex head measures 0.489 to 0.500 inch across the flats, so a 1/2 inch wrench or socket is the right size. Head height is 13/64 inch, which matters if you're working in a shallow counterbore or under a cover plate.
5) How strong are these 18-8 stainless bolts compared with a grade 5 steel bolt?
Tensile runs 100,000 to 150,000 psi minimum with a 65,000 psi minimum yield, and hardness is Rockwell B95 to C32. That puts them in the same tensile neighborhood as a grade 5 carbon bolt, but stainless yields lower and galls easily on assembly, so use anti-seize and controlled torque on stainless nuts.
6) What is the actual shank diameter on a 5/16 stainless hex bolt for drilling a clearance hole?
Shank outside diameter is 0.3065 to 0.3125 inch. A 5/16 inch clearance hole is a hard interference fit at the top of that range, so drill 11/32 inch for normal clearance.
7) How many bolts come in a jar of Metallics JSBH305 and can I buy fewer?
They ship as a jar of 100, and 100 count is the order minimum, so the jar is the smallest buy. Metallics lists other sizes and quantities in this SBHC/JSBHC hex bolt line by request.
How fast can I get the Metallics JSBH305 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 JSBH305 come with a warranty?
Absolutely. The Metallics JSBH305 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 JSBH305?
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installation tips, and troubleshooting. Contact Us
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