The Rivet,blind, cataloged under National Stock Number 5320-01-529-1377, is classified within Federal Supply Class 5320 (Rivets) of the Hardware and Abrasives group. The manufacturer of record is Huck International, Inc. Div Huck Products Division. Government technical data includes 18 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 5320-01-529-1377 |
| Primary Part Number | NAS1921M04S02AU |
| Item Name | Rivet,blind |
| FSC / FSG | 5320 / 53 — Rivets |
| Manufacturer | Huck International, Inc. Div Huck Products Division |
| 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 LOCKING RING |
| Surface Treatment Document and Classification | NAS4006 ASSN STD SINGLE TREATMENT RESPONSE STEM |
| Material Document and Classification | QQ-N-281 FED SPEC SINGLE MATERIAL RESPONSE SLEEVE |
| Material Document and Classification | AMS 5737 ASSN STD 1ST MATERIAL RESPONSE OR QQ-N-281 FED SPEC 2ND MATERIAL RESPONSE LOCKING RING |
| Material Document and Classification | AMS 5737 ASSN STD 1ST MATERIAL RESPONSE STEM |
| Head Style | FLUSH (FLAT) COUNTERSUNK (INCLUDED ANGLE - LESS THAN 135 DEG W OR W/O CHAMFER) |
| Grip Length | 0.063 INCHES MINIMUM AND 0.125 INCHES MAXIMUM IN |
| Shank Style | SELF-PLUGGING MECHANICALLY LOCKED STEM |
| Surface Treatment | ALUMINUM STEM |
| Surface Treatment | PASSIVATE LOCKING RING |
| Countersink Angle | 98.5 DEGREES MINIMUM AND 101.5 DEGREES MAXIMUM |
| Material | IRON ALLOY 660 STEM |
| Material | NICKEL ALLOY 400 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 |
|---|---|
| NAS1921M04S02AU | Huck International, Inc. Div Huck Products Division (USA) |
| NAS1921M04S02AU | Airbus Helicopters (ets De Marignane) (FRA) |
| Reference | Meaning |
|---|---|
| NAS1921M04S02AU | 3/2 Design control — primary reference U.S. Government activity |
| 10495931 | 6/9 Informative reference only Nimikkeistokeskus Ncb Finland |
NSN 5320-01-529-1377 is a Rivet,blind, manufactured by Huck International, Inc. Div Huck Products Division, classified under FSC 5320, Rivets. Status: active.
NSN 5320-01-529-1377 has 2 manufacturer part numbers on file: NAS1921M04S02AU (Huck International, Inc. Div Huck Products Division), NAS1921M04S02AU (Airbus Helicopters (ets De Marignane)).
Key specifications for NAS1921M04S02AU: 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 LOCKING RING. 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.