The Washer,flat, cataloged under National Stock Number 5310-00-185-0113, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier. Government technical data includes 10 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-00-185-0113 |
| Primary Part Number | 99711PC15 |
| Item Name | Washer,flat |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier |
| Status | ACTIVE |
| Surface Treatment Document and Classification | MIL-T-10727 TY 1 MIL SPEC 1ST TREATMENT RESPONSE OR QQ-S-365 GRADE B FED SPEC 2ND TREATMENT RESPONSE OVERALL |
| Overall Diameter | 0.621 INCHES MINIMUM AND 0.625 INCHES MAXIMUM IN |
| Cross-Sectional Shape Style | RECTANGULAR |
| Departure From Cited Document | AS MODIFIED BY MATERIAL SPECS AND AS MODIFIED BY OD |
| Surface Treatment | TIN OR SILVER OVERALL |
| Peripheral Shape Style | ROUND |
| Material | COPPER OVERALL |
| Center Hole Shape Style | ROUND |
| Hole Diameter | 0.318 INCHES MINIMUM AND 0.338 INCHES MAXIMUM IN |
| Thickness | 0.054 INCHES MINIMUM AND 0.074 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 |
| Part Number | Manufacturer |
|---|---|
| 99711PC15 PRIMARY | Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier (USA) |
| SP7157 PRIMARY | Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier (USA) |
| Reference | Meaning |
|---|---|
| 5310001850113 | 6/9 Informative reference only E.c.a Etablissement Central Des Approvisionnements Des Forces Armees Royales |
| AN961-516 | 4/1 Identification reference U.S. Government activity |
NSN 5310-00-185-0113 is a Washer,flat, manufactured by Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-00-185-0113 has 2 manufacturer part numbers on file: 99711PC15 (Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier), SP7157 (Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier).
1 possible match (shared part number, not a government interchangeability claim): 5310-00-461-5534. Verify interchangeability with system specifications before substitution.
Key specifications for 99711PC15: Surface Treatment Document and Classification: MIL-T-10727 TY 1 MIL SPEC 1ST TREATMENT RESPONSE OR QQ-S-365 GRADE B FED SPEC 2ND TREATMENT RESPONSE OVERALL; Overall Diameter: 0.621 INCHES MINIMUM AND 0.625 INCHES MAXIMUM IN; Cross-Sectional Shape Style: RECTANGULAR; Departure From Cited Document: AS MODIFIED BY MATERIAL SPECS AND AS MODIFIED BY OD. 10 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.