The Rivet,blind, cataloged under National Stock Number 5320-01-629-8173, 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 11 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. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5320-01-629-8173 |
| Primary Part Number | GR501BB4S3 |
| Item Name | Rivet,blind |
| FSC / FSG | 5320 / 53 — Rivets |
| Manufacturer | Northrop Grumman Systems Corporation |
| Status | ACTIVE |
| Shank Diameter | 0.124 INCHES MINIMUM AND 0.128 INCHES MAXIMUM IN |
| Fastener Length | 0.487 INCHES NOMINAL IN |
| Head Style | FLUSH (FLAT) COUNTERSUNK (INCLUDED ANGLE - LESS THAN 135 DEG W OR W/O CHAMFER) |
| Grip Length | 0.126 INCHES MINIMUM AND 0.187 INCHES MAXIMUM IN |
| Shank Style | SELF-PLUGGING MECHANICALLY LOCKED STEM |
| Surface Treatment | PASSIVATE STEM |
| Countersink Angle | 98.5 DEGREES MINIMUM AND 101.5 DEGREES MAXIMUM |
| Material | IRON ALLOY 660 STEM |
| Material | NICKEL ALLOY R-405 OR NICKEL ALLOY 400 SLEEVE |
| Material | IRON ALLOY 660 OR NICKEL ALLOY R-405 OR NICKEL ALLOY 400 OR STEEL COMP 316 LOCKING RING |
| Head Major Diameter | 0.188 INCHES MINIMUM AND 0.196 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 |
|---|---|
| GR501BB4S3 PRIMARY | Northrop Grumman Systems Corporation (USA) |
NSN 5320-01-629-8173 is a Rivet,blind, manufactured by Northrop Grumman Systems Corporation, classified under FSC 5320, Rivets. Status: active.
NSN 5320-01-629-8173 has 1 manufacturer part number on file: GR501BB4S3 (Northrop Grumman Systems Corporation).
Key specifications for GR501BB4S3: Shank Diameter: 0.124 INCHES MINIMUM AND 0.128 INCHES MAXIMUM IN; Fastener Length: 0.487 INCHES NOMINAL IN; Head Style: FLUSH (FLAT) COUNTERSUNK (INCLUDED ANGLE - LESS THAN 135 DEG W OR W/O CHAMFER); Grip Length: 0.126 INCHES MINIMUM AND 0.187 INCHES MAXIMUM IN. 11 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.