The Rivet,blind, cataloged under National Stock Number 5320-01-623-3636, is classified within Federal Supply Class 5320 (Rivets) of the Hardware and Abrasives group. The manufacturer of record is Airbus Helicopters (ets De Marignane). Government technical data includes 21 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5320-01-623-3636 |
| Primary Part Number | NAS1921M04S05AU |
| Item Name | Rivet,blind |
| FSC / FSG | 5320 / 53 — Rivets |
| Manufacturer | Airbus Helicopters (ets De Marignane) |
| Status | ACTIVE |
| Shank Diameter | 0.124 INCHES MINIMUM AND 0.128 INCHES MAXIMUM IN |
| Fastener Length | 0.448 INCHES NOMINAL 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-416,TY 2,CL 3 FED SPEC SINGLE TREATMENT RESPONSE SLEEVE |
| Surface Treatment Document and Classification | QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE LOCKING RING |
| Material Document and Classification | QQ-N-281 FED SPEC SINGLE MATERIAL RESPONSE SLEEVE |
| Material Document and Classification | AMS5737 ASSN STD SINGLE MATERIAL RESPONSE STEM |
| Material Document and Classification | AMS5737 ASSN STD 1ST MATERIAL RESPONSE OR QQ-N-281 FED SPEC 2ND 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 AND 80205-NAS4006 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 | PASSIVATE STEM |
| Surface Treatment | ALUMINUM SLEEVE |
| Surface Treatment | PASSIVATE LOCKING RING |
| Countersink Angle | 98.5 DEGREES MINIMUM AND 101.5 DEGREES MAXIMUM |
| Material | IRON ALLOY 660 STEM |
| Material | NICKEL ALLOY SLEEVE |
| Material | IRON ALLOY 660 LOCKING RING |
| Head Major Diameter | 0.221 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 |
|---|---|
| NAS1921M04S05AU | Airbus Helicopters (ets De Marignane) (FRA) |
| Reference | Meaning |
|---|---|
| 10495971 | 6/9 Informative reference only Nimikkeistokeskus Ncb Finland |
| NAS1921M04S05AU | 3/2 Design control — primary reference U.S. Government activity |
NSN 5320-01-623-3636 is a Rivet,blind, manufactured by Airbus Helicopters (ets De Marignane), classified under FSC 5320, Rivets. Status: active.
NSN 5320-01-623-3636 has 1 manufacturer part number on file: NAS1921M04S05AU (Airbus Helicopters (ets De Marignane)).
Key specifications for NAS1921M04S05AU: Shank Diameter: 0.124 INCHES MINIMUM AND 0.128 INCHES MAXIMUM IN; Fastener Length: 0.448 INCHES NOMINAL IN; Expansion Device: SERRATED STEM-TYPE W; Surface Treatment Document and Classification: QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE STEM. 21 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.