The Rivet,blind, cataloged under National Stock Number 5320-00-959-4197, 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 20 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through both NSN and commercial part number lookups. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5320-00-959-4197 |
| Primary Part Number | GR501C4-2 |
| 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 | 0.260 INCHES MAXIMUM IN |
| Expansion Device | SERRATED STEM-TYPE W |
| Surface Treatment Document and Classification | QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE STEM |
| Surface Treatment Document and Classification | QQ-P-35 FOR A286 CRES ONLY FED SPEC SINGLE TREATMENT RESPONSE LOCKING RING |
| 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 |
| Material Document and Classification | AMS 5737 ASSN STD 1ST MATERIAL RESPONSE OR QQ-N-281 FED SPEC 2ND MATERIAL RESPONSE OR QQ-N-281 FED SPEC 3RD MATERIAL RESPONSE LOCKING RING |
| 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 | 0.063 INCHES MINIMUM AND 0.125 INCHES MAXIMUM IN |
| Shank Style | SELF-PLUGGING MECHANICALLY LOCKED STEM |
| Surface Treatment | PASSIVATE STEM |
| Surface Treatment | PASSIVATE LOCKING RING |
| Countersink Angle | 98.5 DEGREES MINIMUM AND 101.5 DEGREES MAXIMUM |
| Shear Strength | 1020 SINGLE POUNDS PER SQUARE INCH |
| Material | NICKEL ALLOY 400 OR NICKEL ALLOY R-405 SLEEVE |
| Material | IRON ALLOY 660 STEM |
| Material | IRON ALLOY 660 OR NICKEL ALLOY 400 OR NICKEL ALLOY R-405 LOCKING RING |
| Head Major Diameter | 0.211 INCHES MINIMUM AND 0.229 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 |
|---|---|
| GR501C4-2 | Northrop Grumman Systems Corporation (USA) |
| MLS100-M04-02 | Huck International, Inc. Div Huck Products Division (USA) |
| MLS100-M04-02 | Huck (FRA) |
| Reference | Meaning |
|---|---|
| 5320PL1052841 | 6/9 Informative reference only Jednolity Indeks Materialowy - Uniform Material Index |
| NAS1921M04-02 | 3/2 Design control — primary reference U.S. Government activity |
| MLS100-M04-02 | 5/9 Secondary reference Huck International, Inc |
| MLS100-M04-02 | 5/9 Secondary reference Huck Mfg Co |
NSN 5320-00-959-4197 is a Rivet,blind, manufactured by Northrop Grumman Systems Corporation, classified under FSC 5320, Rivets. Status: active.
NSN 5320-00-959-4197 has 3 manufacturer part numbers on file: GR501C4-2 (Northrop Grumman Systems Corporation), MLS100-M04-02 (Huck International, Inc. Div Huck Products Division), MLS100-M04-02 (Huck).
Key specifications for GR501C4-2: Shank Diameter: 0.124 INCHES MINIMUM AND 0.128 INCHES MAXIMUM IN; Fastener Length: 0.260 INCHES MAXIMUM IN; Expansion Device: SERRATED STEM-TYPE W; Surface Treatment Document and Classification: QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE STEM. 20 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.