The Rivet,blind, cataloged under National Stock Number 5320-01-280-6857, is classified within Federal Supply Class 5320 (Rivets) of the Hardware and Abrasives group. The manufacturer of record is Huck International, Inc. Government technical data includes 12 specifications, cited from the U.S. Government catalog. The record lists 4 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 5320-01-280-6857 |
| Primary Part Number | GR501BB4-3 |
| Item Name | Rivet,blind |
| FSC / FSG | 5320 / 53 — Rivets |
| Manufacturer | Huck International, Inc |
| Status | ACTIVE |
| Shank Diameter | 0.124 INCHES MINIMUM AND 0.128 INCHES MAXIMUM IN |
| Expansion Device | SERRATED STEM-TYPE W |
| Surface Treatment Document and Classification | QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE STEM |
| Material Document and Classification | QQ-N-281 FED SPEC ALL MATERIAL RESPONSES SLEEVE |
| Material Document and Classification | AMS 5737 ASSN STD SINGLE MATERIAL RESPONSE STEM |
| 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 |
| 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 |
| 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 |
|---|---|
| 7MLS100-M04-03 | Huck International, Inc (USA) |
| 7MLS100-M04-03 | Huck International, Inc. Div Huck Products Division (USA) |
| GR501BB4-3 PRIMARY | Huck International, Inc (USA) |
| GR501BB4-3 PRIMARY | Huck International, Inc. Div Huck Products Division (USA) |
| Reference | Meaning |
|---|---|
| GR501BB4-3 | 7/2 Vendor item drawing reference Northrop Grumman Systems Corporation |
NSN 5320-01-280-6857 is a Rivet,blind, manufactured by Huck International, Inc, classified under FSC 5320, Rivets. Status: active.
NSN 5320-01-280-6857 has 4 manufacturer part numbers on file: 7MLS100-M04-03 (Huck International, Inc), 7MLS100-M04-03 (Huck International, Inc. Div Huck Products Division), GR501BB4-3 (Huck International, Inc), GR501BB4-3 (Huck International, Inc. Div Huck Products Division).
Key specifications for GR501BB4-3: Shank Diameter: 0.124 INCHES MINIMUM AND 0.128 INCHES MAXIMUM IN; Expansion Device: SERRATED STEM-TYPE W; Surface Treatment Document and Classification: QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE STEM; Material Document and Classification: QQ-N-281 FED SPEC ALL MATERIAL RESPONSES SLEEVE. 12 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.