The Washer,flat, cataloged under National Stock Number 5310-01-068-2969, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is G M J Machine Co, Inc Div G.m.j. Machine Company, Inc.. Government technical data includes 9 specifications, cited from the U.S. Government catalog. The record lists 3 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-01-068-2969 |
| Primary Part Number | 989C639H01 |
| Item Name | Washer,flat |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | G M J Machine Co, Inc Div G.m.j. Machine Company, Inc. |
| Status | ACTIVE |
| Overall Diameter | 0.279 INCHES MINIMUM AND 0.286 INCHES MAXIMUM IN |
| Material Document and Classification | MIL-M-20693,TYPE 1 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Cross-Sectional Shape Style | RECTANGULAR |
| Color | BLACK OVERALL |
| Peripheral Shape Style | ROUND |
| Material | PLASTIC POLYAMIDE NYLON OVERALL |
| Center Hole Shape Style | ROUND |
| Hole Diameter | 0.118 INCHES MINIMUM AND 0.123 INCHES MAXIMUM IN |
| Thickness | 0.018 INCHES MINIMUM AND 0.022 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 |
|---|---|
| 989C639H01 PRIMARY | G M J Machine Co, Inc Div G.m.j. Machine Company, Inc. (USA) |
| 989C639H01 | Northrop Grumman Systems Corporation Dba Electronic Systems (USA) |
| LWNY-001BK PRIMARY | Excelitas Technologies Corp (USA) |
| Reference | Meaning |
|---|---|
| NW4-2812 | 5/9 Secondary reference U.S. Government activity |
| NW4-2812 | C/1 Advisory reference — outside the item-of-supply concept Zf Industrieantriebe Witten Gmbh |
NSN 5310-01-068-2969 is a Washer,flat, manufactured by G M J Machine Co, Inc Div G.m.j. Machine Company, Inc., classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-068-2969 has 3 manufacturer part numbers on file: 989C639H01 (G M J Machine Co, Inc Div G.m.j. Machine Company, Inc.), 989C639H01 (Northrop Grumman Systems Corporation Dba Electronic Systems), LWNY-001BK (Excelitas Technologies Corp).
Key specifications for 989C639H01: Overall Diameter: 0.279 INCHES MINIMUM AND 0.286 INCHES MAXIMUM IN; Material Document and Classification: MIL-M-20693,TYPE 1 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL; Cross-Sectional Shape Style: RECTANGULAR; Color: BLACK OVERALL. 9 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.