The Washer,concave, cataloged under National Stock Number 5310-01-069-6348, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Huck International, Inc. Government technical data includes 11 specifications, cited from the U.S. Government catalog. The record lists 7 manufacturer part numbers 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through both NSN and commercial part number lookups. 5 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 5310-01-069-6348 |
| Primary Part Number | TLN1023CD3L5W |
| Item Name | Washer,concave |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Huck International, Inc |
| Status | ACTIVE |
| Surface Treatment Document and Classification | QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Radius | 0.375 INCHES MINIMUM AND 0.380 INCHES MAXIMUM IN |
| Style Designator | CONCAVE |
| Material Document and Classification | AMS 5737 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Outside Diameter | 0.650 INCHES MINIMUM AND 0.660 INCHES MAXIMUM IN |
| Recess Depth | 0.092 INCHES NOMINAL IN |
| Material Thickness | 0.150 INCHES MINIMUM AND 0.160 INCHES MAXIMUM IN |
| Specification/standard Data | 76301-ST3-469 MANUFACTURERS STANDARD |
| Surface Treatment | PASSIVATE OVERALL |
| Material | IRON ALLOY 660 OVERALL |
| Hole Diameter | 0.433 INCHES MINIMUM AND 0.439 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 |
|---|---|
| TLN1023CD3L5W PRIMARY | Huck International, Inc (USA) |
| ST3M469C5MA | Sps Technologies, Llc Dba PB Fasteners (USA) |
| K49661P5 PRIMARY | Howmet Global Fastening Systems Inc (USA) |
| TLN1023CD3L5W | Fairchild Fasteners Europe - Vsd Gmbh (DEU) |
| TLN1023CD3L5W | Reid Products Inc. Dba Reid Products Inc (USA) |
| TLN1023CD3L5W PRIMARY | Sps Technologies Llc Dba PB Fasteners Div PB Fasteners (USA) |
| TLN1023CD3L5W PRIMARY | Sps Technologies, Llc Dba PB Fasteners (USA) |
| Reference | Meaning |
|---|---|
| 10122077 | 6/9 Informative reference only Nimikkeistokeskus Ncb Finland |
| TLN1023CD3L5W | 5/9 Secondary reference U.S. Government activity |
| TLN1023CD3L5W | 3/2 Design control — primary reference U.S. Government activity |
| ST3M469C5MA | 7/2 Vendor item drawing reference The Boeing Company Div Defense |
| TLN1023CD3L5W | 5/9 Secondary reference U.S. Government activity |
NSN 5310-01-069-6348 is a Washer,concave, manufactured by Huck International, Inc, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-069-6348 has 7 manufacturer part numbers on file: TLN1023CD3L5W (Huck International, Inc), ST3M469C5MA (Sps Technologies, Llc Dba PB Fasteners), K49661P5 (Howmet Global Fastening Systems Inc), TLN1023CD3L5W (Fairchild Fasteners Europe - Vsd Gmbh), TLN1023CD3L5W (Reid Products Inc. Dba Reid Products Inc) and 2 more.
Key specifications for TLN1023CD3L5W: Surface Treatment Document and Classification: QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL; Radius: 0.375 INCHES MINIMUM AND 0.380 INCHES MAXIMUM IN; Style Designator: CONCAVE; Material Document and Classification: AMS 5737 ASSN STD SINGLE MATERIAL RESPONSE OVERALL. 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.