The Washer,lock, cataloged under National Stock Number 5310-00-032-1860, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Unison Industries Llc. Government technical data includes 8 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 3 items share a part number with this NSN in the catalog (possible match — not a government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 | 5310-00-032-1860 |
| Primary Part Number | 10-8264 |
| Item Name | Washer,lock |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Unison Industries Llc |
| Status | ACTIVE |
| Surface Treatment Document and Classification | AMS 2400 ASSN STD SINGLE TREATMENT RESPONSE OVERALL |
| Style Designator | SPLIT HELICAL-RIGHT HAND |
| Material Document and Classification | AMS 7240 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Outside Diameter | 0.960 INCHES MINIMUM AND 0.980 INCHES MAXIMUM IN |
| Material Thickness | 0.057 INCHES MINIMUM AND 0.067 INCHES MAXIMUM IN |
| Surface Treatment | CADMIUM OVERALL |
| Material | STEEL OVERALL |
| Hole Diameter | 0.577 INCHES MINIMUM AND 0.609 INCHES MAXIMUM IN |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
NSN 5310-00-032-1860 is a Washer,lock, manufactured by Unison Industries Llc, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-00-032-1860 has 2 manufacturer part numbers on file: 10-8264 (Unison Industries Llc), 10-8264 (Amphenol Corp Div Amphenol Aerospace Operations).
3 possible matches (shared part number, not a government interchangeability claim): 8115-00-439-8189, 5999-00-722-0975, 5999-01-442-9053. Verify interchangeability with system specifications before substitution.
Key specifications for 10-8264: Surface Treatment Document and Classification: AMS 2400 ASSN STD SINGLE TREATMENT RESPONSE OVERALL; Style Designator: SPLIT HELICAL-RIGHT HAND; Material Document and Classification: AMS 7240 ASSN STD SINGLE MATERIAL RESPONSE OVERALL; Outside Diameter: 0.960 INCHES MINIMUM AND 0.980 INCHES MAXIMUM IN. 8 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.