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Nuts M3 Hx Nut St-zn (Jar 100)
Additional Notes
- Other sizes and quantities available by request
Manufacturer Resources
Product Specs
- Arra Compliant:
- C
- Buy American Compliant:
- C
- Dimensional Standard:
- DIN 934
- Division:
- Electrical H1
- Fastener Head Width:
- 5.32 - 5.5 in.
- Fastener Height:
- 2.15 - 2.4
- Hardness:
- Vickers HV 150-302 (Rockwell B78.7-C30)
- Language Code:
- EN
- Neurspe:
- https://ideadigitalasset.com/DAMRoot/Original/10035/11237_ID-SPE-v1-ID-SPE-v1-Hex_Metric_Nut_Steel-Zinc_18-8_SS_316_SS.pdf
- Order Minimum Imperial:
- 100
- Order Minimum Uom Imperial:
- CT
- Pack Type:
- Jar
- Product Group:
- Fasteners
- Product Height:
- 2.15 in
- Product Length:
- 3 in
- Product Weight:
- 0.13 lbs
- Product Width:
- 3 in
- Sub Division:
- Electrical-E H2
- Department:
- Electrical
- Product Subgroup:
- Nuts
- Product Type:
- Metric Hexagonal Nut
- Type2:
- Metric Hexagonal Nut
- Series:
- JNM
- Product Finish:
- Zinc
- Product Details:
- Metric Hexagonal Nut
- Product Material:
- Steel
Metallics JNM03 – Frequently Asked Questions
1) What thread size are the Metallics JNM03 hex nuts, and what screws do they fit?
JNM03 is an M3 metric hex nut, so it threads onto M3 x 0.5 coarse metric screws and studs. It will not fit any inch-series thread such as #4-40 or #6-32, even though those are close in diameter. The nut is made to DIN 934, the standard metric hex nut profile, so it mates with any M3 coarse fastener cut to that spec.
2) What wrench or socket size do I need for an M3 DIN 934 nut?
Width across the flats is listed at 5.32 to 5.5, which is the standard DIN 934 M3 range in millimeters, so a 5.5 mm wrench or nut driver is the right tool. Nut height runs 2.15 to 2.4 mm, so it sits nearly flush and clears tight panel work.
3) Are these M3 nuts plated for use in damp or outdoor enclosures?
The JNM03 is zinc plated steel. Zinc gives ordinary indoor and protected-enclosure corrosion resistance, which covers most panel, fixture and control work. For continuous wet, washdown or coastal exposure, go to a stainless M3 nut instead; the zinc coating will eventually sacrifice and the steel underneath will rust.
4) How many M3 nuts come in a jar of Metallics JNM03, and is there a minimum order?
They ship in a jar of 100 count, and 100 is the order minimum, so a single jar is the smallest buy. Jar packaging keeps small nuts off the van floor and is easy to pour from on a bench. Metallics lists other sizes and quantities by request if you need a different count.
5) Can I substitute a DIN 934 M3 nut for an ISO 4032 or ANSI metric hex nut on the drawing?
DIN 934 and the current ISO metric hex nut profile share the same M3 thread and the same 5.5 mm across flats, so they interchange on the fastener. The only thing that changes between standards at this size is nut thickness, and the JNM03 is listed at 2.15 to 2.4, which is the DIN 934 figure. If a spec calls out a property class by number, confirm the class the drawing requires, since this nut is specified by hardness rather than class.
6) How hard are these nuts, and will they strip on a torqued joint?
Hardness is Vickers HV 150 to 302, equal to Rockwell B78.7 to C30, which is normal carbon steel hex nut range rather than a hardened high-strength nut. That is adequate for the small clamp loads an M3 joint can carry before the screw itself yields. Don't put them on a high-tensile M3 socket screw pulled to full torque if the joint is safety critical; match grades in that case.
7) Where are Metallics JNM03 M3 nuts made?
Country of origin is China. Metallics lists the JNM03 as both ARRA and Buy American compliant, which matters on federally funded work where documentation gets requested.
8) What does a jar of 100 M3 nuts weigh for shipping or kitting?
Listed weight is 0.13 lbs. Light enough to drop in a parts bin or a job kit without thinking about freight.
How fast can I get the Metallics JNM03 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 JNM03 come with a warranty?
Absolutely. The Metallics JNM03 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 JNM03?
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