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Screw 3/4-10 x 4-1/2 SHCS FH St-Blk (Jar 20)
Manufacturer Resources
Product Specs
- Division:
- Electrical H1
- Pack Type:
- Jar
- Product Group:
- Fasteners
- Sub Division:
- Electrical-E H2
- Department:
- Electrical
- Product Subgroup:
- Screws
Metallics JFSC34412 – Frequently Asked Questions
1) What size and thread is the Metallics JFSC34412 socket head cap screw?
It's a 3/4-10 x 4-1/2 inch socket head cap screw. The 3/4-10 means a 3/4 inch nominal diameter with 10 threads per inch, which is the UNC coarse thread for that diameter, and the 4-1/2 inches is the length under the head. If your tapped hole or nut is 3/4-16 fine thread, this one will not thread in.
2) Is the Metallics JFSC34412 a flat head or a standard cylindrical socket head?
The designation includes FH for flat head, so the head is countersunk and sits flush with the surface when driven into a chamfered hole. If you need the screw head to sit proud on a flat surface, or your material is not countersunk, a standard cylindrical socket head cap screw in 3/4-10 x 4-1/2 is the part to order instead.
3) How many screws come in a jar of Metallics JFSC34412?
Twenty screws per jar. Metallics packages this 3/4-10 x 4-1/2 cap screw in jar packaging rather than loose or bulk boxed, so one order unit gets you 20 pieces.
4) What finish is on the Metallics JFSC34412 cap screw, and is it suitable for outdoor or damp locations?
Steel with a black finish, which is the standard plain or black oxide type finish on socket head cap screws. That is a dry-location finish with no corrosion protection to speak of. For exterior, wet, or corrosive locations you want a hot-dip galvanized or stainless 3/4-10 fastener instead.
5) What drive does this take, and do I need a hex key or a socket wrench?
SHCS means socket head cap screw, so it's driven with a hex (Allen) key in the recess at the top of the head, not an external wrench. At 3/4-10 the hex socket size is large enough that you'll want a 5/8 inch hex bit socket on a ratchet or impact rather than a folding key set if you're torquing these down.
6) Can I use this 3/4-10 screw with a standard hex nut, or does it need a tapped hole?
Either works. The 3/4-10 thread is the standard UNC coarse series, so it mates with any 3/4-10 hex nut, coupling nut, or tapped hole of that thread. With 4-1/2 inches of length you have room for a reasonable grip plus nut and washer stack; just make sure enough of the 4-1/2 inches clears your material for the nut to engage fully.
7) What is the Metallics part number I should order for a 3/4-10 by 4-1/2 inch flat head socket cap screw?
JFSC34412 is the Metallics manufacturer part number. That single number covers the 3/4-10 x 4-1/2 inch flat head socket cap screw in steel with a black finish, supplied 20 to a jar.
How fast can I get the Metallics JFSC34412 delivered?
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Does the Metallics JFSC34412 come with a warranty?
Absolutely. The Metallics JFSC34412 is backed by a manufacturer’s warranty.
For full warranty terms, check the product documentation or Contact Us.
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