The Nut Assembly,retainer Ring, cataloged under National Stock Number 5310-01-680-7664, 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 11 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through both NSN and commercial part number lookups. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 2 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-01-680-7664 |
| Primary Part Number | FTR-483-A-.125-S |
| Item Name | Nut Assembly,retainer Ring |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Fatigue Technology, Inc |
| Status | ACTIVE |
| Surface Treatment Document and Classification | AE AMS-QQ-P-35 FED SPEC 15TH TREATMENT RESPONSE OVERALL |
| Largest Outside Diameter | 0.640 INCHES NOMINAL IN |
| Hole Height | 0.125 INCHES NOMINAL IN |
| Sleeve Diameter | 0.3310 INCHES MINIMUM AND 0.3330 INCHES MAXIMUM IN |
| Bolt Circle Diameter | 0.3295 INCHES MINIMUM AND 0.3309 INCHES MAXIMUM IN |
| Drilled Hole Diameter | 0.3310 INCHES MINIMUM AND 0.3330 INCHES MAXIMUM IN |
| Surface Treatment | PASSIVATE OVERALL |
| Nut Style | PLATE |
| Material | STEEL CORROSION RESISTING OVERALL |
| Largest Diameter | 0.250 INCHES NOMINAL IN |
| Hole Type and Quantity | 1 TAPPED |
| 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 |
|---|---|
| FTR-483-A-.125-S PRIMARY | Fatigue Technology, Inc (USA) |
| FTR-483-A-0-.125-S | Fatigue Technology, Inc (USA) |
| Reference | Meaning |
|---|---|
| C20956-1-125 | 7/2 Vendor item drawing reference U.S. Government activity |
| 5310PL2131304 | 6/9 Informative reference only Jednolity Indeks Materialowy - Uniform Material Index |
| 5310PL2081193 | 6/9 Informative reference only Jednolity Indeks Materialowy - Uniform Material Index |
| C20956 | D/9 Drawing number reference only U.S. Government activity |
NSN 5310-01-680-7664 is a Nut Assembly,retainer Ring, manufactured by Fatigue Technology, Inc, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-680-7664 has 2 manufacturer part numbers on file: FTR-483-A-.125-S (Fatigue Technology, Inc), FTR-483-A-0-.125-S (Fatigue Technology, Inc).
2 possible matches (shared part number, not a government interchangeability claim): 5340-01-681-4463, 5340-01-681-4471. Verify interchangeability with system specifications before substitution.
Key specifications for FTR-483-A-.125-S: Overall Height: 0.324 INCHES NOMINAL IN; Surface Treatment Document and Classification: AE AMS-QQ-P-35 FED SPEC 15TH TREATMENT RESPONSE OVERALL; Largest Outside Diameter: 0.640 INCHES NOMINAL IN; Hole Height: 0.125 INCHES NOMINAL IN. 11 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.