The Washer,flat, cataloged under National Stock Number 5310-01-690-6136, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Heartland Precision Fasteners Inc. Government technical data includes 8 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through both NSN and commercial part number lookups. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-01-690-6136 |
| Primary Part Number | NAS1149G0663YP |
| Item Name | Washer,flat |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Heartland Precision Fasteners Inc |
| Status | ACTIVE |
| Overall Diameter | 0.625 INCHES NOMINAL IN |
| Cross-Sectional Shape Style | RECTANGULAR |
| Surface Treatment | CADMIUM OVERALL |
| Peripheral Shape Style | ROUND |
| Material | STEEL COMP 4130 OVERALL |
| Center Hole Shape Style | ROUND |
| Hole Diameter | 0.4212 INCHES NOMINAL IN |
| Thickness | 0.063 INCHES NOMINAL 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 |
|---|---|
| NAS1149G0663YP | Hi-Shear Corporation (USA) |
| NAS1149G0663YP | Huck International, Inc (USA) |
| NAS1149G0663YP | Sps Technologies, Llc Dba Cherry Aerospace Div Div Cherry Aerospace (USA) |
| NAS1149G0663YP | Sonic Industries, Inc. Dba Sonic Industries Inc Div Sonic Industries (USA) |
| NAS1149G0663YP | The Boeing Company Div Defense (USA) |
| NAS1149G0663YP | Fastener Innovation Technology, Inc. Dba F I T (USA) |
| NAS1149G0663YP PRIMARY | Heartland Precision Fasteners Inc (USA) |
| Reference | Meaning |
|---|---|
| NAS1149G0663YP | 5/2 Secondary reference U.S. Government activity |
| NAS1149G0663YP | 5/2 Secondary reference U.S. Government activity |
| NAS1149G0663YP | 3/2 Design control — primary reference U.S. Government activity |
| NAS1149G0663YP | 5/2 Secondary reference U.S. Government activity |
NSN 5310-01-690-6136 is a Washer,flat, manufactured by Heartland Precision Fasteners Inc, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-690-6136 has 7 manufacturer part numbers on file: NAS1149G0663YP (Hi-Shear Corporation), NAS1149G0663YP (Huck International, Inc), NAS1149G0663YP (Sps Technologies, Llc Dba Cherry Aerospace Div Div Cherry Aerospace), NAS1149G0663YP (Sonic Industries, Inc. Dba Sonic Industries Inc Div Sonic Industries), NAS1149G0663YP (The Boeing Company Div Defense) and 2 more.
Key specifications for NAS1149G0663YP: Overall Diameter: 0.625 INCHES NOMINAL IN; Cross-Sectional Shape Style: RECTANGULAR; Special Features: ***OVERSIZED HOLE DIAMETER***; Surface Treatment: CADMIUM OVERALL. 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.