The Rivet,blind, cataloged under National Stock Number 5320-00-421-1057, 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 17 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through both NSN and commercial part number lookups. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5320-00-421-1057 |
| Primary Part Number | MLSP-M04-03C |
| 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 |
| Lubrication | OIL, SPERM WHALE, SPEC 606, HUCK MFG CO |
| Head Height | 0.054 INCHES MINIMUM AND 0.064 INCHES MAXIMUM IN |
| Fastener Length | 0.282 INCHES MINIMUM AND 0.302 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-416 TY 2 CL 3 FED SPEC 1ST TREATMENT RESPONSE OR NAS 4006 ASSN STD 2ND TREATMENT RESPONSE SLEEVE |
| 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 | UNIVERSAL |
| Grip Length | 0.126 INCHES MINIMUM AND 0.187 INCHES MAXIMUM IN |
| Shank Style | SELF-PLUGGING MECHANICALLY LOCKED STEM |
| Surface Treatment | PASSIVATE STEM |
| Surface Treatment | CADMIUM AND CHROMATE OR ALUMINUM ALLOY SLEEVE |
| Material | NICKEL ALLOY 400 OR NICKEL ALLOY R-405 SLEEVE |
| Material | IRON ALLOY 660 STEM |
| Head Major Diameter | 0.238 INCHES MINIMUM AND 0.262 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 |
|---|---|
| MLSP-M04-03C | Huck International, Inc. Div Huck Products Division (USA) |
| MLSP-M04-03C | Huck (FRA) |
| Reference | Meaning |
|---|---|
| NAS1919M04-03W | 3/2 Design control — primary reference U.S. Government activity |
| MLSP-M04-03C | 5/9 Secondary reference Huck International, Inc |
| MLSP-M04-03C | 5/9 Secondary reference Huck Mfg Co |
| 5320PL0740251 | 6/9 Informative reference only Jednolity Indeks Materialowy - Uniform Material Index |
NSN 5320-00-421-1057 is a Rivet,blind, manufactured by Huck International, Inc. Div Huck Products Division, classified under FSC 5320, Rivets. Status: active.
NSN 5320-00-421-1057 has 2 manufacturer part numbers on file: MLSP-M04-03C (Huck International, Inc. Div Huck Products Division), MLSP-M04-03C (Huck).
Key specifications for MLSP-M04-03C: Shank Diameter: 0.124 INCHES MINIMUM AND 0.128 INCHES MAXIMUM IN; Lubrication: OIL, SPERM WHALE, SPEC 606, HUCK MFG CO; Head Height: 0.054 INCHES MINIMUM AND 0.064 INCHES MAXIMUM IN; Fastener Length: 0.282 INCHES MINIMUM AND 0.302 INCHES MAXIMUM IN. 17 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.