The Rivet,blind, cataloged under National Stock Number 5320-01-277-9944, 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 16 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 5320-01-277-9944 |
| Primary Part Number | BL5270-5-2 |
| Item Name | Rivet,blind |
| FSC / FSG | 5320 / 53 — Rivets |
| Manufacturer | Hi-Shear Corporation |
| Status | ACTIVE |
| Shank Diameter | 0.1625 INCHES MINIMUM AND 0.1645 INCHES MAXIMUM IN |
| Lubrication | DRY FILM OR CETYL ALCOHOL OR PARAFFIN WAX |
| Width Across Flats | 0.375 INCHES NOMINAL IN |
| Head Height | 0.096 INCHES MAXIMUM IN |
| Expansion Device | THREADED STEM |
| Surface Treatment Document and Classification | QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE SLEEVE |
| Material Document and Classification | QQ-S-763 FED SPEC 1ST MATERIAL RESPONSE OR AMS5639 ASSN STD 2ND MATERIAL RESPONSE OR AMS5641 ASSN STD 3RD MATERIAL RESPONSE SLEEVE |
| Material Document and Classification | AMS4928 ASSN STD 1ST MATERIAL RESPONSE OR AMS4967 ASSN STD 2ND MATERIAL RESPONSE NUT |
| Material Document and Classification | AMS4928 ASSN STD 1ST MATERIAL RESPONSE OR AMS4967 ASSN STD 2ND MATERIAL RESPONSE STEM |
| Head Style | HEXAGON |
| Grip Length | 0.125 INCHES NOMINAL IN |
| Shank Style | THREADED SELF-PLUGGING SHANK W/SLEEVE |
| Surface Treatment | PASSIVATE SLEEVE |
| Material | TITANIUM ALLOY UNS R56400 STEM |
| Material | TITANIUM ALLOY UNS R56400 NUT |
| Material | STEEL COMP 303SE OR STEEL COMP 304 SLEEVE |
| 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 |
|---|---|
| BL5270-5-2 | Hi-Shear Corporation (USA) |
| BL5270-5-2 | Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc (CAN) |
| Reference | Meaning |
|---|---|
| PLT5270-5-2 | 5/2 Secondary reference U.S. Government activity |
| PLT5270-5-2 | 3/2 Design control — primary reference U.S. Government activity |
NSN 5320-01-277-9944 is a Rivet,blind, manufactured by Hi-Shear Corporation, classified under FSC 5320, Rivets. Status: active.
NSN 5320-01-277-9944 has 2 manufacturer part numbers on file: BL5270-5-2 (Hi-Shear Corporation), BL5270-5-2 (Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc).
Key specifications for BL5270-5-2: Shank Diameter: 0.1625 INCHES MINIMUM AND 0.1645 INCHES MAXIMUM IN; Lubrication: DRY FILM OR CETYL ALCOHOL OR PARAFFIN WAX; Width Across Flats: 0.375 INCHES NOMINAL IN; Head Height: 0.096 INCHES MAXIMUM IN. 16 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.