The Pin-Rivet, cataloged under National Stock Number 5320-01-399-2071, is classified within Federal Supply Class 5320 (Rivets) of the Hardware and Abrasives group. The manufacturer of record is Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company. Government technical data includes 18 specifications, cited from the U.S. Government catalog. The record lists 6 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5320-01-399-2071 |
| Primary Part Number | HLT437ST-12-20 |
| Item Name | Pin-Rivet |
| FSC / FSG | 5320 / 53 — Rivets |
| Manufacturer | Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company |
| Status | ACTIVE |
| Shank Diameter | 0.3896 INCHES MINIMUM AND 0.3901 INCHES MAXIMUM IN |
| Lubrication | CETYL ALCOHOL, SPEC 305, HI-SHEAR CORP |
| Fastener Length | 1.830 INCHES MINIMUM AND 1.850 INCHES MAXIMUM IN |
| Material Document and Classification | AMS4928 ASSN STD SINGLE MATERIAL RESPONSE OR AMS4967 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Head Style | FLUSH COUNTERSUNK |
| Thread Direction | RIGHT-HAND |
| Nominal Thread Size | 0.375 INCHES IN |
| Specification/standard Data | 73197-HLT437 MANUFACTURERS STANDARD |
| Grip Length | 1.245 INCHES MINIMUM AND 1.255 INCHES MAXIMUM IN |
| Width Between Flats | 0.1582 INCHES MINIMUM AND 0.1617 INCHES MAXIMUM IN |
| Shank Style | PIN-RIVET, STRAIGHT, THREADED |
| Minimum Tensile Strength | 14000 POUNDS PER SQUARE INCH LBS |
| Countersink Angle | 100.0 DEGREES NOMINAL |
| Shear Strength | 22700 DOUBLE POUNDS PER SQUARE INCH |
| Thread Class | 3A A |
| Material | TITANIUM ALLOY UNS R56400 OVERALL |
| Thread Series Designator | UNIFIED NATIONAL JOINT FINE (UNJF) |
| Head Major Diameter | 0.7556 INCHES MINIMUM AND 0.7604 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 |
|---|---|
| HLT437ST-12-20 | Hi-Shear Corporation (USA) |
| HLT437ST-12-20 PRIMARY | Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company (USA) |
| HLT437ST-12-20 | Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc (CAN) |
| HLT437ST-12-20 PRIMARY | Huck International, Inc (USA) |
| HLT437ST-12-20 | Sps Technologies, Llc Dba PB Fasteners (USA) |
| 03A073-12-20X | Northrop Grumman Systems Corp Dba Northrop Grumman Computing Systems (USA) |
| Reference | Meaning |
|---|---|
| HLT437ST-12-20 | 5/9 Secondary reference Sps Technologies Inc |
| HLT437ST-12-20 | 5/2 Secondary reference U.S. Government activity |
| HLT437ST-12-20 | 5/9 Secondary reference U.S. Government activity |
NSN 5320-01-399-2071 is a Pin-Rivet, manufactured by Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company, classified under FSC 5320, Rivets. Status: active.
NSN 5320-01-399-2071 has 6 manufacturer part numbers on file: HLT437ST-12-20 (Hi-Shear Corporation), HLT437ST-12-20 (Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company), HLT437ST-12-20 (Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc), HLT437ST-12-20 (Huck International, Inc), HLT437ST-12-20 (Sps Technologies, Llc Dba PB Fasteners) and 1 more.
Key specifications for HLT437ST-12-20: Shank Diameter: 0.3896 INCHES MINIMUM AND 0.3901 INCHES MAXIMUM IN; Lubrication: CETYL ALCOHOL, SPEC 305, HI-SHEAR CORP; Fastener Length: 1.830 INCHES MINIMUM AND 1.850 INCHES MAXIMUM IN; Material Document and Classification: AMS4928 ASSN STD SINGLE MATERIAL RESPONSE OR AMS4967 ASSN STD SINGLE MATERIAL RESPONSE OVERALL. 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.