The Retainer,fastener, cataloged under National Stock Number 5325-00-563-9330, is classified within Federal Supply Class 5325 (Fastening Devices) of the Hardware and Abrasives group. The manufacturer of record is Northrop Grumman Support Services Corp. Government technical data includes 1 specification, 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5325-00-563-9330 |
| Primary Part Number | 581R277H02 |
| Item Name | Retainer,fastener |
| FSC / FSG | 5325 / 53 — Fastening Devices |
| Manufacturer | Northrop Grumman Support Services Corp |
| Status | ACTIVE |
| General Characteristics Item Description | STEEL QQ-5-764,PASSIVATED QQ-P-35,0.250 IN. LG,0.250-28 UNF 2A THD,0.350 IN. MIN,0.398 IN. MAX DIA HEAD A |
| 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 |
|---|---|
| 581R277H02 | Howmet Global Fastening Systems Inc. Div Tridair Products (USA) |
| 581R277H02 PRIMARY | Northrop Grumman Support Services Corp (USA) |
| 581R277H02 | Fastener Technology Corp (USA) |
| Reference | Meaning |
|---|---|
| 581R277H02 | 3/9 Design control — primary reference U.S. Government activity |
NSN 5325-00-563-9330 is a Retainer,fastener, manufactured by Northrop Grumman Support Services Corp, classified under FSC 5325, Fastening Devices. Status: active.
NSN 5325-00-563-9330 has 3 manufacturer part numbers on file: 581R277H02 (Howmet Global Fastening Systems Inc. Div Tridair Products), 581R277H02 (Northrop Grumman Support Services Corp), 581R277H02 (Fastener Technology Corp).
Key specifications for 581R277H02: General Characteristics Item Description: STEEL QQ-5-764,PASSIVATED QQ-P-35,0.250 IN. LG,0.250-28 UNF 2A THD,0.350 IN. MIN,0.398 IN. MAX DIA HEAD A. 1 specification is 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.