The Ring,retaining, cataloged under National Stock Number 5325-00-981-8548, is classified within Federal Supply Class 5325 (Fastening Devices) of the Hardware and Abrasives group. The manufacturer of record is Dresser Industries Inc Leroi Div. Government technical data includes 8 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5325-00-981-8548 |
| Primary Part Number | H31-731 |
| Item Name | Ring,retaining |
| FSC / FSG | 5325 / 53 — Fastening Devices |
| Manufacturer | Dresser Industries Inc Leroi Div |
| Status | ACTIVE |
| Usage Design | INTERNAL |
| Cross-Sectional Shape Style | RECTANGULAR |
| Outside Diameter | 1.391 INCHES NOMINAL IN |
| Major Thickness | 0.109 INCHES NOMINAL IN |
| Inside Diameter | 1.267 INCHES NOMINAL IN |
| Casehardening Indicator | NOT CASEHARDENED |
| Ring Style | HOOKED WIRE |
| Material | STEEL |
| 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 |
|---|---|
| H31-731 PRIMARY | Dresser Industries Inc Leroi Div (USA) |
| Reference | Meaning |
|---|---|
| H31-731 | C/1 Advisory reference — outside the item-of-supply concept Zf Industrieantriebe Witten Gmbh |
| H31-557 | 5/9 Secondary reference Dresser Industries Inc Leroi Div |
| LR-153 | 5/9 Secondary reference Associated Spring Us, Llc Div Corry |
NSN 5325-00-981-8548 is a Ring,retaining, manufactured by Dresser Industries Inc Leroi Div, classified under FSC 5325, Fastening Devices. Status: active.
NSN 5325-00-981-8548 has 1 manufacturer part number on file: H31-731 (Dresser Industries Inc Leroi Div).
Key specifications for H31-731: Usage Design: INTERNAL; Cross-Sectional Shape Style: RECTANGULAR; Outside Diameter: 1.391 INCHES NOMINAL IN; Major Thickness: 0.109 INCHES NOMINAL IN. 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.