The Rivet,blind, cataloged under National Stock Number 5320-01-162-9766, is classified within Federal Supply Class 5320 (Rivets) of the Hardware and Abrasives group. The manufacturer of record is Northrop Grumman Systems Corporation. Government technical data includes 17 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5320-01-162-9766 |
| Primary Part Number | GR501AB8-4 |
| Item Name | Rivet,blind |
| FSC / FSG | 5320 / 53 — Rivets |
| Manufacturer | Northrop Grumman Systems Corporation |
| Status | ACTIVE |
| Shank Diameter | 0.258 INCHES MINIMUM AND 0.260 INCHES MAXIMUM IN |
| Fastener Length | 0.432 INCHES MAXIMUM IN |
| Expansion Device | SERRATED STEM-TYPE W |
| Surface Treatment Document and Classification | MIL-F-81177 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Hardness Rating | 326.0 KNOOP MINIMUM AND 466.0 KNOOP MAXIMUM SLEEVE |
| Hardness Rating | 48.0 ROCKWELL C MINIMUM AND 53.0 ROCKWELL C MAXIMUM STEM |
| Material Document and Classification | AISI ASSN STD ALL MATERIAL RESPONSES STEM |
| Material Document and Classification | AISI ASSN STD ALL MATERIAL RESPONSES SLEEVE |
| Head Style | FLUSH (FLAT) COUNTERSUNK (INCLUDED ANGLE - LESS THAN 135 DEG W OR W/O CHAMFER) |
| Grip Length | 0.187 INCHES MINIMUM AND 0.251 INCHES MAXIMUM IN |
| Shank Style | SELF-PLUGGING MECHANICALLY LOCKED STEM |
| Surface Treatment | CADMIUM OVERALL |
| Countersink Angle | 99.0 DEGREES MINIMUM AND 101.0 DEGREES MAXIMUM |
| Shear Strength | 112000 SINGLE POUNDS PER SQUARE INCH |
| Material | STEEL COMP 8740 STEM |
| Material | STEEL COMP 4027 OR STEEL COMP 4037 SLEEVE |
| Head Major Diameter | 0.399 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 |
|---|---|
| GR501AB8-4 | Huck International, Inc. Div Huck Products Division (USA) |
| GR501AB8-4 PRIMARY | Northrop Grumman Systems Corporation (USA) |
| Reference | Meaning |
|---|---|
| GR501AB | D/9 Drawing number reference only Northrop Grumman Systems Corporation |
NSN 5320-01-162-9766 is a Rivet,blind, manufactured by Northrop Grumman Systems Corporation, classified under FSC 5320, Rivets. Status: active.
NSN 5320-01-162-9766 has 2 manufacturer part numbers on file: GR501AB8-4 (Huck International, Inc. Div Huck Products Division), GR501AB8-4 (Northrop Grumman Systems Corporation).
Key specifications for GR501AB8-4: Shank Diameter: 0.258 INCHES MINIMUM AND 0.260 INCHES MAXIMUM IN; Fastener Length: 0.432 INCHES MAXIMUM IN; Expansion Device: SERRATED STEM-TYPE W; Surface Treatment Document and Classification: MIL-F-81177 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL. 17 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.