The Screw,close Tolerance, cataloged under National Stock Number 5305-01-646-1902, is classified within Federal Supply Class 5305 (Screws) of the Hardware and Abrasives group. The manufacturer of record is Saturn Fasteners Inc. The record lists 7 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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.
| Item Name | Screw,close Tolerance |
| FSC / FSG | 5305 — Screws (FSG 53) |
| Manufacturers | Saturn Fasteners Inc (CAGE 0K6Z0); Sps Technologies Llc Dba PB Fasteners Div PB Fasteners (CAGE 27624); Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company (CAGE 06725); Fastener Technology Corp (CAGE 58794); B & B Specialties Inc Dba Gs Aerospace Div Gs Aerospace (CAGE 1EM77) |
| Parameter | Value |
|---|---|
| NSN | 5305-01-646-1902 |
| Primary Part Number | JSFB23-3-8D |
| Item Name | Screw,close Tolerance |
| FSC / FSG | 5305 / 53 — Screws |
| Manufacturer | Saturn Fasteners Inc |
| Status | ACTIVE |
| 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 |
|---|---|
| JSFB23-3-8D PRIMARY | Saturn Fasteners Inc (USA) |
| JSFB23-3-8D PRIMARY | Sps Technologies Llc Dba PB Fasteners Div PB Fasteners (USA) |
| JSFB23-3-8D PRIMARY | Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company (USA) |
| JSFB23-3-8D | Fastener Technology Corp (USA) |
| JSFB23-3-8D PRIMARY | B & B Specialties Inc Dba Gs Aerospace Div Gs Aerospace (USA) |
| JSFB23-3-8D PRIMARY | Fastener Innovation Technology, Inc. Dba F I T (USA) |
| JSFB23-3-8D PRIMARY | M.s. Aerospace Inc. Dba Ms Aerospace Inc (USA) |
| Reference | Meaning |
|---|---|
| JSFB23-3-8D | 1/2 Source control — Government-approved source U.S. Government activity |
| JSFB23-3-8D | 3/2 Design control — primary reference U.S. Government activity |
NSN 5305-01-646-1902 is a Screw,close Tolerance, manufactured by Saturn Fasteners Inc, classified under FSC 5305, Screws. Status: active.
NSN 5305-01-646-1902 has 7 manufacturer part numbers on file: JSFB23-3-8D (Saturn Fasteners Inc), JSFB23-3-8D (Sps Technologies Llc Dba PB Fasteners Div PB Fasteners), JSFB23-3-8D (Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company), JSFB23-3-8D (Fastener Technology Corp), JSFB23-3-8D (B & B Specialties Inc Dba Gs Aerospace Div Gs Aerospace) and 2 more.
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.