The Rivet,blind, cataloged under National Stock Number 5320-01-272-6891, is classified within Federal Supply Class 5320 (Rivets) of the Hardware and Abrasives group. The manufacturer of record is Hi-Shear Corporation. Government technical data includes 14 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through both NSN and commercial part number lookups. 5 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5320-01-272-6891 |
| Primary Part Number | BL270-8-10 |
| Item Name | Rivet,blind |
| FSC / FSG | 5320 / 53 — Rivets |
| Manufacturer | Hi-Shear Corporation |
| Status | ACTIVE |
| Shank Diameter | 0.2580 INCHES MINIMUM AND 0.2600 INCHES MAXIMUM IN |
| Lubrication | DRY FILM OR GREASE FILM OR WAX OR CETYL ALCOHOL |
| Width Across Flats | 0.367 INCHES MINIMUM AND 0.375 INCHES MAXIMUM IN |
| Head Height | 0.135 INCHES MAXIMUM IN |
| Fastener Length | 1.295 INCHES NOMINAL IN |
| Expansion Device | THREADED STEM |
| Material Document and Classification | AMS4928 ASSN STD SINGLE MATERIAL RESPONSE BOLT |
| Material Document and Classification | AMS4928 ASSN STD SINGLE MATERIAL RESPONSE NUT |
| Head Style | HEXAGON |
| Grip Length | 0.595 INCHES MINIMUM AND 0.656 INCHES MAXIMUM IN |
| Shank Style | THREADED SELF-PLUGGING SHANK W/SLEEVE |
| 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 |
| 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 |
|---|---|
| BL270-8-10 PRIMARY | Hi-Shear Corporation (USA) |
| BL270-8-10 PRIMARY | Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc (CAN) |
| PLT270-8-10 | Howmet Global Fastening Systems Inc (USA) |
| Reference | Meaning |
|---|---|
| ST3M790-4-10 | 7/2 Vendor item drawing reference The Boeing Company Div Defense |
| PLT270-8-10 | 5/9 Secondary reference U.S. Government activity |
| 10112368 | 6/9 Informative reference only Nimikkeistokeskus Ncb Finland |
| PLT270-8-10 | 5/2 Secondary reference U.S. Government activity |
| BL7-4-10 | 5/9 Secondary reference Hi-Shear Corporation |
NSN 5320-01-272-6891 is a Rivet,blind, manufactured by Hi-Shear Corporation, classified under FSC 5320, Rivets. Status: active.
NSN 5320-01-272-6891 has 3 manufacturer part numbers on file: BL270-8-10 (Hi-Shear Corporation), BL270-8-10 (Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc), PLT270-8-10 (Howmet Global Fastening Systems Inc).
Key specifications for BL270-8-10: Shank Diameter: 0.2580 INCHES MINIMUM AND 0.2600 INCHES MAXIMUM IN; Lubrication: DRY FILM OR GREASE FILM OR WAX OR CETYL ALCOHOL; Width Across Flats: 0.367 INCHES MINIMUM AND 0.375 INCHES MAXIMUM IN; Head Height: 0.135 INCHES MAXIMUM IN. 14 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.