The Washer,split, cataloged under National Stock Number 5310-01-142-4738, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Us Army Aviation and Missile Command. Government technical data includes 7 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-01-142-4738 |
| Primary Part Number | 13012172 |
| Item Name | Washer,split |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Us Army Aviation and Missile Command |
| Status | ACTIVE |
| Distance Across Split Opening | 0.460 INCHES MAXIMUM IN |
| Style Designator | SPLIT |
| Material Document and Classification | QQ-S-766,CONDITION A FED SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Outside Diameter | 8.740 INCHES NOMINAL IN |
| Material Thickness | 0.460 INCHES NOMINAL IN |
| Material | STEEL COMP 304 OVERALL |
| Hole Diameter | 4.190 INCHES MINIMUM AND 4.290 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 |
|---|---|
| 13012172 PRIMARY | Us Army Aviation and Missile Command (USA) |
| Reference | Meaning |
|---|---|
| 13012172 | 5/1 Secondary reference Wego Precision Machine, Inc. |
NSN 5310-01-142-4738 is a Washer,split, manufactured by Us Army Aviation and Missile Command, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-142-4738 has 1 manufacturer part number on file: 13012172 (Us Army Aviation and Missile Command).
Key specifications for 13012172: Distance Across Split Opening: 0.460 INCHES MAXIMUM IN; Style Designator: SPLIT; Material Document and Classification: QQ-S-766,CONDITION A FED SPEC SINGLE MATERIAL RESPONSE OVERALL; Outside Diameter: 8.740 INCHES NOMINAL IN. 7 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.