Illustrative drawing. Actual product is confirmed to your specification at quotation.
Nuts
Jam Nuts
A jam nut is a thin hex nut tightened against a standard nut so the two resist loosening, or used alone where there is no room for a full-height nut. When used as a locking pair, tighten the thin nut against the full nut.
- Low profile for tight spaces
- Metric coarse and fine pitch
- Use as a lock pair with a full nut
Specifications
- Material
- Carbon steelAlloy steelStainless steel A2 (AISI 304)Stainless steel A4 (AISI 316)
- Grade / property class
- Class 04Class 05A2-70A4-70
- Thread
- Metric coarse (ISO 261)Metric fine pitchUNC / UNF (imperial)
- Finish / coating
- PlainBlack oxideZinc plated (clear / yellow)Hot-dip galvanised
- Size range
- Up to M6M8–M12M14–M24M27–M48
- Standards
- ISO 4035DIN 439DIN 936 (fine pitch)ASME B18.2.2
Exact dimensions, lengths and availability are confirmed at quotation.
Applications
- Locking a primary nut on a rod end or linkage
- Adjusters and turnbuckles
- Shafts and spindles with limited length
- Instrument and panel mounting
- Levelling feet and machine mounts
Related and complementary fasteners
Request a quote for Jam Nuts
Give us the size, grade, finish and quantity. We reply within one business day.
Common questions
- Which sizes and grades of jam nuts do you supply?
- We supply jam nuts in Up to M6, M8–M12, M14–M24, M27–M48 size bands and grades/classes including Class 04, Class 05, A2-70, A4-70. Exact availability, dimensions and lead time are confirmed at quotation.
- Which standards do jam nuts follow?
- Common standards are ISO 4035, DIN 439, DIN 936 (fine pitch), ASME B18.2.2. Tell us the standard you need and we will quote to it.
- Can you supply in bulk or with test certificates?
- Yes. We quote for loose lots and scheduled bulk supply across India, and can share manufacturer test certificates where available. Confirm the requirement when you request a quote.
Need a quote on bulk or custom industrial supply?
Share your specifications and quantities — our technical team will respond with pricing and lead time within one business day.