The Washer,concave, cataloged under National Stock Number 5310-01-099-0661, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Reid Products Inc. Dba Reid Products Inc. Government technical data includes 11 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through both NSN and commercial part number lookups. 5 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-01-099-0661 |
| Primary Part Number | TLN1020-6W |
| Item Name | Washer,concave |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Reid Products Inc. Dba Reid Products Inc |
| Status | ACTIVE |
| Surface Treatment Document and Classification | QQ-P-416,TY 2,CL 1 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Radius | 0.435 INCHES MINIMUM AND 0.440 INCHES MAXIMUM IN |
| Hardness Rating | 36.0 ROCKWELL C MINIMUM AND 40.0 ROCKWELL C MAXIMUM |
| Style Designator | CONCAVE |
| Material Document and Classification | MIL-S-5000 MIL SPEC 1ST MATERIAL RESPONSE OR MIL-S-6049 MIL SPEC 2ND MATERIAL RESPONSE OVERALL |
| Outside Diameter | 0.780 INCHES MINIMUM AND 0.790 INCHES MAXIMUM IN |
| Recess Depth | 0.094 INCHES MINIMUM AND 0.104 INCHES MAXIMUM IN |
| Material Thickness | 0.170 INCHES MINIMUM AND 0.180 INCHES MAXIMUM IN |
| Surface Treatment | CADMIUM AND CHROMATE OVERALL |
| Material | STEEL COMP 4340 OR STEEL COMP 8740 OVERALL |
| Hole Diameter | 0.531 INCHES MINIMUM AND 0.537 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 |
|---|---|
| TLN1020-6W | Reid Products Inc. Dba Reid Products Inc (USA) |
| Reference | Meaning |
|---|---|
| TLN1020-6W | 5/9 Secondary reference U.S. Government activity |
| TLN1020-6W | 5/9 Secondary reference Sps Technologies, Llc Dba PB Fasteners |
| TLN1020-6W | 3/9 Design control — primary reference U.S. Government activity |
| TLN1020-6W | 5/9 Secondary reference Sps Technologies Llc Dba PB Fasteners Div PB Fasteners |
| TLN1020-6W | 5/9 Secondary reference U.S. Government activity |
NSN 5310-01-099-0661 is a Washer,concave, manufactured by Reid Products Inc. Dba Reid Products Inc, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-099-0661 has 1 manufacturer part number on file: TLN1020-6W (Reid Products Inc. Dba Reid Products Inc).
Key specifications for TLN1020-6W: Surface Treatment Document and Classification: QQ-P-416,TY 2,CL 1 FED SPEC SINGLE TREATMENT RESPONSE OVERALL; Radius: 0.435 INCHES MINIMUM AND 0.440 INCHES MAXIMUM IN; Hardness Rating: 36.0 ROCKWELL C MINIMUM AND 40.0 ROCKWELL C MAXIMUM; Style Designator: CONCAVE. 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.