The Washer,key, cataloged under National Stock Number 5310-01-050-7147, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Serra Manufacturing Corporation Dba Serra Manufacturing. Government technical data includes 14 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-01-050-7147 |
| Primary Part Number | SMC1700-2 |
| Item Name | Washer,key |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Serra Manufacturing Corporation Dba Serra Manufacturing |
| Status | ACTIVE |
| Internal Straight Key Width | 0.059 INCHES MINIMUM AND 0.065 INCHES MAXIMUM IN |
| Distance From Centerline to Top of Internal Key | 0.217 INCHES MINIMUM AND 0.220 INCHES MAXIMUM IN |
| Surface Treatment Document and Classification | QQ-P-416,TY 1,CL 3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Distance From Centerline to Inside of Prebent Key | 0.352 INCHES MINIMUM AND 0.368 INCHES MAXIMUM IN |
| External Prebent Key Length | 0.050 INCHES MAXIMUM IN |
| Overall Distance Including Keys | 0.739 INCHES MINIMUM AND 0.765 INCHES MAXIMUM IN |
| Style Designator | KEY |
| Material Document and Classification | 66 FED STD ALL MATERIAL RESPONSES OVERALL |
| Outside Diameter | 0.703 INCHES MINIMUM AND 0.735 INCHES MAXIMUM IN |
| Material Thickness | 0.037 INCHES MINIMUM AND 0.043 INCHES MAXIMUM IN |
| Surface Treatment | CADMIUM OVERALL |
| External Prebent Key Width | 0.105 INCHES MINIMUM AND 0.115 INCHES MAXIMUM IN |
| Material | STEEL COMP 303 AND STEEL COMP 304 OVERALL |
| Hole Diameter | 0.470 INCHES MINIMUM AND 0.480 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 |
|---|---|
| WC1234-2 | Allmetal Screw Products Corp (USA) |
| SMC1700-2 PRIMARY | Serra Manufacturing Corporation Dba Serra Manufacturing (USA) |
| Reference | Meaning |
|---|---|
| A380-12-2 | 5/9 Secondary reference U.S. Government activity |
| 993342-2 | 5/2 Secondary reference U.S. Government activity |
NSN 5310-01-050-7147 is a Washer,key, manufactured by Serra Manufacturing Corporation Dba Serra Manufacturing, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-050-7147 has 2 manufacturer part numbers on file: WC1234-2 (Allmetal Screw Products Corp), SMC1700-2 (Serra Manufacturing Corporation Dba Serra Manufacturing).
Key specifications for SMC1700-2: Internal Straight Key Width: 0.059 INCHES MINIMUM AND 0.065 INCHES MAXIMUM IN; Distance From Centerline to Top of Internal Key: 0.217 INCHES MINIMUM AND 0.220 INCHES MAXIMUM IN; Surface Treatment Document and Classification: QQ-P-416,TY 1,CL 3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL; Distance From Centerline to Inside of Prebent Key: 0.352 INCHES MINIMUM AND 0.368 INCHES MAXIMUM IN. 14 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.