The Rivet,blind, cataloged under National Stock Number 5320-01-490-5676, is classified within Federal Supply Class 5320 (Rivets) of the Hardware and Abrasives group. The manufacturer of record is Leonardo Spa Helicopters Division - Production Site. Government technical data includes 10 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 5320-01-490-5676 |
| Primary Part Number | NAS1721H4L2A |
| Item Name | Rivet,blind |
| FSC / FSG | 5320 / 53 — Rivets |
| Manufacturer | Leonardo Spa Helicopters Division - Production Site |
| Status | ACTIVE |
| Shank Diameter | 0.120 INCHES MINIMUM AND 0.129 INCHES MAXIMUM IN |
| Fastener Length | 0.263 INCHES MAXIMUM IN |
| Expansion Device | SERRATED STEM-TYPE W |
| Head Style | FLUSH (FLAT) COUNTERSUNK (INCLUDED ANGLE - LESS THAN 135 DEG W OR W/O CHAMFER) |
| Grip Length | 0.050 INCHES MINIMUM AND 0.141 INCHES MAXIMUM IN |
| Shank Style | SELF-PLUGGING MECHANICALLY LOCKED STEM |
| Surface Treatment | ANODIZE SLEEVE |
| Countersink Angle | 99.0 DEGREES MINIMUM AND 101.0 DEGREES MAXIMUM |
| Material | ALUMINUM ALLOY SLEEVE |
| Head Major Diameter | 0.225 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 |
|---|---|
| NAS1721H4L2A | Leonardo Spa Helicopters Division - Production Site (ITA) |
| AS64400L407 | Sae International Dba Sae International (USA) |
| Reference | Meaning |
|---|---|
| AS64400L407 | 5/9 Secondary reference Society of British Aerospace Companies Ltd (sbac) |
| NAS1721H4L2A | 3/2 Design control — primary reference U.S. Government activity |
NSN 5320-01-490-5676 is a Rivet,blind, manufactured by Leonardo Spa Helicopters Division - Production Site, classified under FSC 5320, Rivets. Status: active.
NSN 5320-01-490-5676 has 2 manufacturer part numbers on file: NAS1721H4L2A (Leonardo Spa Helicopters Division - Production Site), AS64400L407 (Sae International Dba Sae International).
Key specifications for NAS1721H4L2A: Shank Diameter: 0.120 INCHES MINIMUM AND 0.129 INCHES MAXIMUM IN; Fastener Length: 0.263 INCHES MAXIMUM IN; Expansion Device: SERRATED STEM-TYPE W; Head Style: FLUSH (FLAT) COUNTERSUNK (INCLUDED ANGLE - LESS THAN 135 DEG W OR W/O CHAMFER). 10 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.