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Bolts 3/4-10 X 4-1/2 G5 Hxbt St-zn (Box 50)
Features
- Used to mount motor to machinery. Also popular in automotive and truck repair
- A cap screw made from medium carbon steel and heat-treated
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:
- 15/32 in.
- Fastener Head Type:
- Hex
- Fastener Head Width:
- 1.100 - 1.125 in.
- Fastener Height:
- 0.455 - 0.483
- Fastener Length:
- 4/1/02
- Fastener Width:
- 1.254 - 1.299
- Field Application:
- Electrical, Plumbing, Heating, 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:
- 50
- Order Minimum Uom Imperial:
- EA
- Outside Diameter:
- 0.7410 - 0.7500 IN
- Pack Type:
- Box
- Product Group:
- Fasteners
- Product Height:
- 6.13 in
- Product Length:
- 9 in
- Product Weight:
- 32.2 lbs
- Product Width:
- 9 in
- Sub Division:
- Electrical-E H2
- Tensile Strength:
- 105000 psi minimum
- Thread Per Inch:
- 10
- Thread Standard:
- ASME B18.2.1-2012
- Wrenching Height:
- 0.324
- 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 G5HC145 – Frequently Asked Questions
1) What size hole do I need to drill for a 3/4-10 x 4-1/2 Grade 5 hex bolt?
The G5HC145 hex bolt measures 0.7410 to 0.7500 inch across the shank, so a standard 13/16 inch clearance hole gives you normal fit without reaming. If you are tapping instead of drilling through, the thread is 3/4-10 UNC at 10 threads per inch, so the mating nut or tapped hole must be 3/4-10.
2) Does this hex bolt meet ARRA and Buy American requirements for a public job?
Metallics flags the G5HC145 Grade 5 hex bolt as both ARRA compliant and Buy American compliant, which is the pair of checkboxes most federally funded and public agency submittals ask for on fasteners. Thread dimensions are to ASME B18.2.1-2012, the standard commonly cited on fastener submittals.
3) What wrench or socket fits the head on this Metallics 3/4-10 hex bolt?
Head width across flats runs 1.100 to 1.125 inches, which is a 1-1/8 inch wrench or socket. Head height is 15/32 inch, with a wrenching height of 0.324 inch, so you need about a third of an inch of flat engagement, worth checking if you are working in a recess or behind a bracket flange.
4) Will zinc plated steel hold up outdoors or in a wet mechanical room?
Zinc plating over steel is a mild corrosion barrier, fine for indoor mechanical rooms, equipment skids, and sheltered work. It is not stainless. For continuous wet exposure, coastal air, or chemical washdown, specify hot dip galvanized or stainless fasteners instead. The G5HC145 is zinc finished carbon steel.
5) How many bolts come in a box of the Metallics G5HC145, and can I buy fewer?
It ships as a box of 50 pieces, and 50 each is the order minimum, so it is not sold by the single bolt. Metallics lists other sizes and quantities by request if 3/4-10 x 4-1/2 is not the length you need.
6) What grip length does a 4-1/2 inch Grade 5 hex bolt give me, and what else do I need to order?
The bolt is 3/4-10 by 4-1/2 inches overall under the head, so your combined material stack plus washers plus nut height has to land inside that. Nuts and washers are not part of the box of 50, so order 3/4-10 heavy hex or finished hex nuts and 3/4 inch washers separately to complete the joint.
7) What does a box of 50 of these 3/4 inch bolts weigh for shipping or carrying up to a roof unit?
A full box of 50 runs 32.2 lbs. Worth knowing if the fasteners are going up a ladder to a rooftop condenser or air handler, which is squarely the kind of HVAC, plumbing, and electrical work these are stocked for.
8) Is this a cap screw or a hex bolt, and does the difference matter for my spec?
Metallics calls out the G5HC145 as a hex head cap screw made from medium carbon steel and heat treated, catalogued in the G5HC and JG5HC Grade 5 series. In practice the trade uses hex bolt and hex cap screw interchangeably at this size, and the dimensions here are to ASME B18.2.1-2012. If your spec distinguishes the two, go by the dimensional standard rather than the name.
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Does the Metallics G5HC145 come with a warranty?
Absolutely. The Metallics G5HC145 is backed by a manufacturer’s warranty.
For full warranty terms, check the product documentation or Contact Us.
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