The Rivet,blind, cataloged under National Stock Number 5320-00-185-4245, 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 18 specifications, 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through both NSN and commercial part number lookups. 5 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5320-00-185-4245 |
| Primary Part Number | GR501L6-5 |
| Item Name | Rivet,blind |
| FSC / FSG | 5320 / 53 — Rivets |
| Manufacturer | Northrop Grumman Systems Corporation |
| Status | ACTIVE |
| Shank Diameter | 0.189 INCHES MINIMUM AND 0.193 INCHES MAXIMUM IN |
| Fastener Length | 0.475 INCHES MAXIMUM IN |
| Expansion Device | SERRATED STEM-TYPE W |
| Surface Treatment Document and Classification | MIL-C-5541 MIL SPEC SINGLE TREATMENT RESPONSE OR MIL-A-8625 MIL SPEC 1ST TREATMENT RESPONSE SLEEVE |
| Surface Treatment Document and Classification | MIL-C-5541 MIL SPEC SINGLE TREATMENT RESPONSE OR MIL-A-8625 MIL SPEC 1ST TREATMENT RESPONSE STEM |
| Material Document and Classification | QQ-A-430 FED SPEC SINGLE MATERIAL RESPONSE SLEEVE |
| Material Document and Classification | QQ-A-430 FED SPEC SINGLE MATERIAL RESPONSE STEM |
| Head Style | FLUSH (FLAT) COUNTERSUNK (INCLUDED ANGLE - LESS THAN 135 DEG W OR W/O CHAMFER) |
| Specification/standard Data | 80205-NAS1921 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD |
| Grip Length | 0.251 INCHES MINIMUM AND 0.312 INCHES MAXIMUM IN |
| Shank Style | SELF-PLUGGING MECHANICALLY LOCKED STEM |
| Surface Treatment | ANODIZE OR CHROMATE SLEEVE |
| Surface Treatment | ANODIZE OR CHROMATE STEM |
| Countersink Angle | 99.0 DEGREES MINIMUM AND 101.0 DEGREES MAXIMUM |
| Shear Strength | 1090 SINGLE POUNDS PER SQUARE INCH |
| Material | ALUMINUM ALLOY 5056 OR ALUMINUM ALLOY 2024 SLEEVE |
| Material | ALUMINUM ALLOY 5056 OR ALUMINUM ALLOY 2024 STEM |
| Head Major Diameter | 0.349 INCHES MINIMUM AND 0.357 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 |
|---|---|
| GR501L6-5 | Northrop Grumman Systems Corporation (USA) |
| MLS100-B06-05 | Huck International, Inc. Div Huck Products Division (USA) |
| MLS100-B06-05 | Huck (FRA) |
| Reference | Meaning |
|---|---|
| MLS100-B06-05 | 5/9 Secondary reference Huck Mfg Co |
| MLS100-B06-05 | 5/9 Secondary reference Huck International, Inc |
| NAS1921B06-05 | 3/2 Design control — primary reference U.S. Government activity |
| 5320PL1018096 | 6/9 Informative reference only Jednolity Indeks Materialowy - Uniform Material Index |
| MLS100B6-5 | 5/9 Secondary reference Huck Mfg Co |
NSN 5320-00-185-4245 is a Rivet,blind, manufactured by Northrop Grumman Systems Corporation, classified under FSC 5320, Rivets. Status: active.
NSN 5320-00-185-4245 has 3 manufacturer part numbers on file: GR501L6-5 (Northrop Grumman Systems Corporation), MLS100-B06-05 (Huck International, Inc. Div Huck Products Division), MLS100-B06-05 (Huck).
Key specifications for GR501L6-5: Shank Diameter: 0.189 INCHES MINIMUM AND 0.193 INCHES MAXIMUM IN; Fastener Length: 0.475 INCHES MAXIMUM IN; Expansion Device: SERRATED STEM-TYPE W; Surface Treatment Document and Classification: MIL-C-5541 MIL SPEC SINGLE TREATMENT RESPONSE OR MIL-A-8625 MIL SPEC 1ST TREATMENT RESPONSE SLEEVE. 18 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.