The Nut,self-Locking,cap, cataloged under National Stock Number 5310-01-700-8304, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Fatigue Technology, Inc. Government technical data includes 14 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-01-700-8304 |
| Primary Part Number | 4630-012 |
| Item Name | Nut,self-Locking,cap |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Fatigue Technology, Inc |
| Status | ACTIVE |
| Lubrication | DRY FILM LUBRICANT |
| Surface Treatment Document and Classification | MS-QQ-P-416 TYPE II CLASS I ASSN STD SINGLE TREATMENT RESPONSE NUT |
| Thread Series | UNIFIED NATIONAL JOINT FINE (UNJF) |
| Material Document and Classification | AMS-QQ-A-225/9 ASSN STD SINGLE MATERIAL RESPONSE WASHER |
| Material Document and Classification | AMS5085 ASSN STD 1ST MATERIAL RESPONSE OR AMS6250 OR AMS6370 ASSN STD 2ND MATERIAL RESPONSE NUT |
| Thread Direction | RIGHT-HAND |
| Nominal Thread Size | 0.2500 INCHES IN |
| Nut Height | 0.425 INCHES MAXIMUM IN |
| Surface Treatment | CADMIUM NUT |
| Surface Treatment | ANODIZE WASHER |
| Thread Class | 3B |
| Thread Quantity Per Inch | 28 |
| Material | STEEL COMP 1050 OR STEEL COMP 4130 NUT |
| Material | ALUMINUM ALLOY 7075 WASHER |
| 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 |
|---|---|
| C21026-4 | Aero-Glen International Llc (USA) |
| 4630-012 PRIMARY | Fatigue Technology, Inc (USA) |
| Reference | Meaning |
|---|---|
| C21026-4 | 7/2 Vendor item drawing reference U.S. Government activity |
| C21026 | D/9 Drawing number reference only U.S. Government activity |
| C21026-4 | 5/9 Secondary reference Fatigue Technology, Inc |
NSN 5310-01-700-8304 is a Nut,self-Locking,cap, manufactured by Fatigue Technology, Inc, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-700-8304 has 2 manufacturer part numbers on file: C21026-4 (Aero-Glen International Llc), 4630-012 (Fatigue Technology, Inc).
Key specifications for 4630-012: Lubrication: DRY FILM LUBRICANT; Surface Treatment Document and Classification: MS-QQ-P-416 TYPE II CLASS I ASSN STD SINGLE TREATMENT RESPONSE NUT; Thread Series: UNIFIED NATIONAL JOINT FINE (UNJF); Material Document and Classification: AMS-QQ-A-225/9 ASSN STD SINGLE MATERIAL RESPONSE WASHER. 14 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.