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Metallics JSFN1420 Nuts 1/4-20 Serr Flange Locknut St-zn (Jar 100)
Model: MET-JSFN1420
Nuts 1/4-20 Serr Flange Locknut St-zn (Jar 100)
Additional Notes
Other sizes and quantities available by request
Features
Hex nut with an enlarged circular base flaring out from the bottom of the...
Metallics
$50.16
$0.16
Nuts 1/4-20 Serr Flange Locknut SS (Jar 100)
Additional Notes
- Other sizes and quantities available by request
Manufacturer Resources
Product Specs
- Arra Compliant:
- C
- Buy American Compliant:
- C
- Dimensional Standard:
- ASME B18.16.4-2008
- Division:
- Electrical H1
- Fastener Head Width:
- 0.428 - 0.438 in.
- Fastener Height:
- 0.222 - 0.236
- Fastener Width:
- 0.488 - 0.505
- Language Code:
- EN
- Neurspe:
- https://ideadigitalasset.com/DAMRoot/Original/10035/11237_ID-SPE-v1-ID-SPE-v1-Hex_Serr_Flange_Lck_Nut_St-Zn_18-8_SS.pdf
- Order Minimum Imperial:
- 100
- Order Minimum Uom Imperial:
- CT
- Pack Type:
- Jar
- Panel Thickness:
- 0.04 IN
- Product Group:
- Fasteners
- Product Height:
- 2.15 in
- Product Length:
- 3 in
- Product Weight:
- 0.93 lbs
- Product Width:
- 3 in
- Sub Division:
- Electrical-E H2
- Thread Per Inch:
- 20
- Washer Od:
- 0.574 - 0.594 in.
- Wrenching Height:
- 0.14
- Department:
- Electrical
- Product Subgroup:
- Nuts
- Product Type:
- Hexagonal Serrated Flange Lock Nut
- Type2:
- Hexagonal Serrated Flange Lock Nut
- Series:
- JSFN
- Product Details:
- Hexagonal Serrated Flange Lock Nut
- Product Material:
- 18-8 Stainless Steel
Metallics JSFN1420SS – Frequently Asked Questions
1) What thread size are the Metallics JSFN1420SS flange locknuts?
They are 1/4-20, meaning a 1/4 inch nominal thread at 20 threads per inch (UNC). They thread onto standard 1/4-20 bolts, studs, and all-thread rod.
2) Do I need a separate washer with a serrated flange locknut?
No. The flange on the JSFN1420SS acts as the bearing surface, with a washer outside diameter of 0.574 to 0.594 inch spreading load across the joint, and the serrations under the flange bite into the surface to resist loosening from vibration. That is why it is a one-piece replacement for a nut plus lock washer on sheet metal, strut, and enclosure work.
3) Will serrated flange nuts chew up a stainless panel or finished surface?
They will. The serrations are meant to dig in, so on a painted, plated, or cosmetic face they will score the finish and break any coating. Use them on structural or concealed joints, or put a hardened flat washer under the flange when appearance or coating integrity matters. The nut itself is 18-8 stainless, so galvanic corrosion against a stainless panel is not a concern.
4) What wrench or socket size fits these 1/4-20 flange locknuts?
The hex measures 0.428 to 0.438 inch across the flats, which is a 7/16 inch wrench or socket. Overall across the flange the nut runs 0.488 to 0.505 inch, so allow clearance for the flange when working in tight boxes or channel.
5) Are these stainless flange nuts suitable for outdoor or damp locations?
The material is 18-8 stainless steel, so they hold up outdoors, in damp interiors, and in washdown areas far better than zinc-plated steel. Pair them with stainless bolts of the same family to avoid mixed-metal corrosion at the joint.
6) What dimensional standard do these Metallics flange nuts conform to?
They are built to ASME B18.16.4-2008, the standard covering prevailing-torque and free-spinning flange lock nuts. That matters on spec jobs where the submittal has to name a dimensional standard rather than just a size.
7) Are the Metallics JSFN1420SS nuts Buy American and ARRA compliant?
Both the ARRA and Buy American fields are flagged as compliant for the JSFN1420SS, which is what a government, school district, or transit procurement officer needs on the submittal. Country of origin is China.
8) How much height does this locknut add past the bolt?
Nut height is 0.222 to 0.236 inch, with 0.14 inch of that being wrenching height on the hex. Figure roughly a quarter inch of stack plus whatever bolt thread runs past it when you are checking clearance behind a panel or inside a box.
9) How are these 1/4-20 locknuts packaged and what is the minimum order?
They ship in a jar of 100 pieces, and 100 count is the order minimum. The filled jar weighs 0.93 lbs and measures 3 x 2.15 x 3 inches, so it drops into a van bin or a service cart tray without repacking.
10) Can I get this serrated flange locknut in other sizes or pack quantities?
Yes. The JSFN series runs beyond the 1/4-20 stainless version, and other sizes and quantities are available by request. If you are standardizing a facility on one flange nut, ask for the sizes you need rather than mixing in a different nut style.
How fast can I get the Metallics JSFN1420SS 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 JSFN1420SS come with a warranty?
Absolutely. The Metallics JSFN1420SS 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 JSFN1420SS?
You can call, text, or email our expert support team for fast answers. We’re here to help with
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selection,
installation tips, and troubleshooting. Contact Us
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