The Nut,plain,knurled, cataloged under National Stock Number 5310-01-400-5837, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Fastener Innovation Technology, Inc. Dba F I T. Government technical data includes 13 specifications, cited from the U.S. Government catalog. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-01-400-5837 |
| Primary Part Number | FIT5008 |
| Item Name | Nut,plain,knurled |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Fastener Innovation Technology, Inc. Dba F I T |
| Status | ACTIVE |
| Surface Treatment Document and Classification | QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE NUT |
| Thread Series | UNF |
| Material Document and Classification | AMS 5737 ASSN STD SINGLE MATERIAL RESPONSE NUT |
| Features Provided | FLOATING NUT |
| Thread Direction | RIGHT-HAND |
| Nominal Thread Size | 0.250 INCHES IN |
| Nut Diameter | 0.500 INCHES NOMINAL IN |
| Surface Treatment | PASSIVATE NUT |
| Thread Class | 3B |
| Thread Quantity Per Inch | 28 |
| Material | IRON ALLOY 660 OVERALL |
| Material | IRON ALLOY 660 NUT |
| Knurl Width | 0.375 INCHES NOMINAL IN |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| FIT5008 PRIMARY | Fastener Innovation Technology, Inc. Dba F I T (USA) |
| Reference | Meaning |
|---|---|
| 8655498 | 5/2 Secondary reference U.S. Government activity |
NSN 5310-01-400-5837 is a Nut,plain,knurled, manufactured by Fastener Innovation Technology, Inc. Dba F I T, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-400-5837 has 1 manufacturer part number on file: FIT5008 (Fastener Innovation Technology, Inc. Dba F I T).
Key specifications for FIT5008: Surface Treatment Document and Classification: QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE NUT; Thread Series: UNF; Material Document and Classification: AMS 5737 ASSN STD SINGLE MATERIAL RESPONSE NUT; Features Provided: FLOATING NUT. 13 specifications are documented in the U.S. Government catalog.
No hazard code in the DLA record (HMIC N). Hazard information on this page is shown exactly as it appears in the DLA record.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-16.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.