The Rivet,blind, cataloged under National Stock Number 5320-01-160-2137, is classified within Federal Supply Class 5320 (Rivets) of the Hardware and Abrasives group. The manufacturer of record is The Boeing Company Div Defense. Government technical data includes 13 specifications, cited from the U.S. Government catalog. The record lists 3 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 5320-01-160-2137 |
| Primary Part Number | ST3M781-6-5 |
| Item Name | Rivet,blind |
| FSC / FSG | 5320 / 53 — Rivets |
| Manufacturer | The Boeing Company Div Defense |
| Status | ACTIVE |
| Shank Diameter | 0.3725 INCHES MINIMUM AND 0.3745 INCHES MAXIMUM IN |
| Lubrication | DRY FILM OR GREASE FILM OR WAX OR CETYL ALCOHOL |
| Expansion Device | THREADED STEM |
| Material Document and Classification | AMS 4928 ASSN STD SINGLE MATERIAL RESPONSE NUT |
| Material Document and Classification | AMS 4928 ASSN STD SINGLE MATERIAL RESPONSE BOLT |
| Head Style | FLUSH (FLAT) COUNTERSUNK (INCLUDED ANGLE - LESS THAN 135 DEG W OR W/O CHAMFER) |
| Grip Length | 0.282 INCHES MINIMUM AND 0.344 INCHES MAXIMUM IN |
| Shank Style | THREADED SELF-PLUGGING SHANK W/SLEEVE |
| Countersink Angle | 99.0 DEGREES MINIMUM AND 101.0 DEGREES MAXIMUM |
| Material | STEEL COMP 304 OR STEEL COMP 304L OR IRON ALLOY 660 SLEEVE |
| Material | TITANIUM ALLOY UNS R56400 NUT |
| Material | TITANIUM ALLOY UNS R56400 BOLT |
| Head Major Diameter | 0.5604 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 |
|---|---|
| ST3M781-6-5 PRIMARY | The Boeing Company Div Defense (USA) |
| BL1058-12-5 PRIMARY | Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc (CAN) |
| BL1058-12-5 PRIMARY | Hi-Shear Corporation (USA) |
| Reference | Meaning |
|---|---|
| PLT1058-12-5 | 3/2 Design control — primary reference U.S. Government activity |
| PLT1058-12-5 | 3/2 Design control — primary reference U.S. Government activity |
| 10111887 | 6/9 Informative reference only Nimikkeistokeskus Ncb Finland |
NSN 5320-01-160-2137 is a Rivet,blind, manufactured by The Boeing Company Div Defense, classified under FSC 5320, Rivets. Status: active.
NSN 5320-01-160-2137 has 3 manufacturer part numbers on file: ST3M781-6-5 (The Boeing Company Div Defense), BL1058-12-5 (Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc), BL1058-12-5 (Hi-Shear Corporation).
Key specifications for ST3M781-6-5: Shank Diameter: 0.3725 INCHES MINIMUM AND 0.3745 INCHES MAXIMUM IN; Lubrication: DRY FILM OR GREASE FILM OR WAX OR CETYL ALCOHOL; Expansion Device: THREADED STEM; Material Document and Classification: AMS 4928 ASSN STD SINGLE MATERIAL RESPONSE NUT. 13 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.