- FSC
- 5310Nuts and Washers
- NIIN / country
- 011145174 · USA
- Unit / status
- EA · inactive
- Catalog unit price
- $3
- DEMIL
- A
- Source of supply
- SMS
Characteristics
FLIS item characteristics from PUB LOG identification.
| Characteristic | Value |
|---|---|
| COUNTERBORE DIAMETER | NUT INCHES MINIMUM 0.412 AND INCHES MAXIMUM 0.417 |
| HARDNESS RATING | ROCKWELL C MINIMUM 39.0 AND ROCKWELL C MAXIMUM 48.0 |
| LOCKING FEATURE | PREVAILING TORQUE ALL METAL DESIGN |
| MATERIAL | NUT STEEL COMP 4140 OR STEEL COMP 4340 OR STEEL COMP 8740 |
| MATERIAL DOCUMENT AND CLASSIFICATION | NUT MIL SPEC 1ST MATERIAL RESPONSE -IL-S-5626 OR MIL SPEC 2ND MATERIAL RESPONSE -IL-S-5000 OR MIL SPEC 3RD MATERIAL RESPONSE -IL-S-6049 |
| NOMINAL THREAD SIZE | INCHES 0.375 |
| NUT COUNTERBORE DEPTH | NUT INCHES MINIMUM 0.087 AND INCHES MAXIMUM 0.097 |
| OVERALL HEIGHT | INCHES MAXIMUM 0.355 |
| SPECIAL FEATURES | ROCKWELL C SCALE 40 MIN AND ROCKWELL C SCALE 45 MAX WASHER |
| SURFACE TREATMENT | OVERALL CADMIUM AND CHROMATE |
| SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | OVERALL FED SPEC ALL TREATMENT RESPONSES QQ--416,TY 2,CL 2 |
| TEMP RATING | FAHRENHEIT MAXIMUM 450.0 |
| THREAD CLASS | 3B |
| THREAD DIRECTION | RIGHT-HAND |
| THREAD QUANTITY PER INCH | 24 |
| THREAD SERIES | UNIFIED NATIONAL JOINT FINE (UNJF) |
| WASHER OUTSIDE DIAMETER | INCHES MAXIMUM 0.660 |
| WIDTH ACROSS FLATS | INCHES MINIMUM 0.430 AND INCHES MAXIMUM 0.439 |
Manufacturers that have won this work
DIBBS award history plus USASpending rows whose CAGE matches SAM registration. CAGE codes open the DLA vendor lookup. Names without a CAGE match are shown as unverified.
Recent award / quote activity
Open buys for this NSN
SPE4A626T26FR
DIBBS · quotes by Sep 10, 2026 · TOTAL SMALL BUSINESS
Quote history
Recorded quotes from nsn_quote_history when present (vendor references / quote tracker). Interchangeable-parts tables are not in this career schema — skipped.
No quote history rows for this NSN.
Listed manufacturers
MCRL rows for this NSN — companies that make or supply the part.