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Bolts 3/8-16 X 2-1/4 G5 Hxbt St-zn (Jar 100)
Features
- A cap screw made from medium carbon steel and heat-treated
- Used to mount motor to machinery. Also popular in automotive and truck repair
Additional Notes
- Other sizes and quantities available by request
Manufacturer Resources
Product Specs
- Arra Compliant:
- N
- Buy American Compliant:
- No
- Division:
- Electrical H1
- Fastener Head Height:
- 15/64 in.
- Fastener Head Type:
- Hex
- Fastener Head Width:
- 0.551 - 0.562 in.
- Fastener Height:
- 0.226 - 0.243
- Fastener Length:
- 2/1/04
- Fastener Width:
- 0.628 - 0.650
- Field Application:
- Electrical, Plumbing, Heating and Air Conditioning Industries
- Grade:
- 5
- Hardness:
- Rockwell C19-30
- Language Code:
- EN
- Material Standard:
- AISI 1008 - 1026
- Neurspe:
- https://ideadigitalasset.com/DAMRoot/Original/10035/11237_ID-SPE-v1-ID-SPE-v1-Gr_5_Hex_Bolt_Dom_St-Zn.pdf
- Order Minimum Imperial:
- 100
- Order Minimum Uom Imperial:
- JR
- Outside Diameter:
- 0.3690 - 0.3750 IN
- Pack Type:
- Jar
- Product Group:
- Fasteners
- Product Height:
- 7.25 in
- Product Length:
- 4.5 in
- Product Weight:
- 3547 g
- Product Width:
- 114.3 MM
- Sub Division:
- Electrical-E H2
- Tensile Strength:
- 105000 psi minimum
- Thread Per Inch:
- 16
- Thread Standard:
- ASME B18.2.1-2012
- Voltage Rating:
- Zinc Chromate
- Wrenching Height:
- 0.16
- Yield Strength:
- 105000 psi minimum
- Department:
- Electrical
- Product Subgroup:
- Bolts
- Product Type:
- Hexagonal Bolt
- Type2:
- Hexagonal Bolt
- Series:
- G5HC and JG5HC
- Product Finish:
- Zinc
- Product Details:
- Hexagonal Bolt
- Product Material:
- Steel
Metallics JG5HC29 – Frequently Asked Questions
1) Is the JG5HC29 a coarse or fine thread bolt, and what nut do I need with it?
It runs 16 threads per inch on a 3/8 inch diameter, which is the UNF fine thread pitch rather than the more common 3/8-16 coarse... to be precise: the thread count on record is 16 TPI, made to ASME B18.2.1-2012. Pair it with a 3/8 inch nut of matching 16 TPI pitch. A standard 3/8-16 hex nut threads on directly; do not mix it with a 3/8-24 nut, the pitches will not engage.
2) What strength rating does this Grade 5 hex bolt carry, and is it strong enough for mounting a motor?
Grade 5 medium carbon steel, heat treated, with a minimum tensile strength of 105,000 psi and hardness of Rockwell C19-30. That is the normal class used for mounting motors to machinery and for automotive and truck repair work. If your drawing calls for Grade 8, this is not a substitute, Grade 8 is a higher-strength class.
3) What size hole does a 3/8 hex cap screw like this need?
The shank runs 0.3690 to 0.3750 inch in diameter, so it passes a 7/16 inch drilled clearance hole comfortably and will bind in a hole drilled at a true 3/8 inch. Overall bolt length is 2-1/4 inches, so figure your grip plus nut and washer stack against that.
4) Do these bolts qualify for a Buy American or ARRA funded project?
No. The JG5HC29 hex bolts are not Buy American compliant and are not ARRA compliant, with country of origin listed as multiple. On a federally funded job with domestic sourcing requirements, you need a domestically produced Grade 5 hex cap screw instead.
5) Will the zinc plating on these bolts hold up outdoors or in a damp mechanical room?
Finish is zinc on steel, which handles indoor and sheltered mechanical-room conditions and incidental moisture. It is not a marine or sustained-wet-exposure coating, so for direct weather, coastal air, or chemical exposure go to stainless or hot-dip galvanized instead.
6) How many bolts come in a jar of Metallics JG5HC29, and can I buy fewer?
They ship in a jar of 100, and 100 in the jar unit of measure is the order minimum, so the jar is the smallest buying unit. Metallics does produce the G5HC and JG5HC hex cap screw series in other sizes and pack quantities on request.
7) Are these hex bolts suitable for electrical and HVAC equipment mounting, or are they a general construction fastener?
Metallics lists the field application as the electrical, plumbing, heating and air conditioning trades, which is where this hex cap screw is normally stocked: anchoring motors, unit mounts, strut and equipment bases. Mechanically it is a standard Grade 5 steel bolt made to ASME B18.2.1-2012 from AISI 1008-1026 steel, so it serves general bolting duty of the same strength class as well.
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Does the Metallics JG5HC29 come with a warranty?
Absolutely. The Metallics JG5HC29 is backed by a manufacturer’s warranty.
For full warranty terms, check the product documentation or Contact Us.
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