The Screw,close Tolerance, cataloged under National Stock Number 5305-01-646-1391, 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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); Pilgrim Screw Corp Dba Pilgrim Aerospace Fasteners Div Arizona (CAGE 1GP79); Heartland Precision Fasteners Inc (CAGE 0ZC92); Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company (CAGE 06725); Howmet Global Fastening Systems Inc Div City of Industry Operations (CAGE 1RC86) |
| Parameter | Value |
|---|---|
| NSN | 5305-01-646-1391 |
| Primary Part Number | JSFB15E08-6 |
| 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 |
|---|---|
| JSFB15E08-6 PRIMARY | Saturn Fasteners Inc (USA) |
| JSFB15E08-6 | Pilgrim Screw Corp Dba Pilgrim Aerospace Fasteners Div Arizona (USA) |
| JSFB15E08-6 PRIMARY | Heartland Precision Fasteners Inc (USA) |
| JSFB15E08-6 PRIMARY | Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company (USA) |
| JSFB15E08-6 PRIMARY | Howmet Global Fastening Systems Inc Div City of Industry Operations (USA) |
| JSFB15E08-6 PRIMARY | Sps Technologies, Llc Dba PB Fasteners (USA) |
| JSFB15E08-6 PRIMARY | Sps Technologies Llc Dba PB Fasteners Div PB Fasteners (USA) |
| Reference | Meaning |
|---|---|
| JSFB15E08-6 | 1/2 Source control — Government-approved source U.S. Government activity |
| JSFB15E08-6 | 3/2 Design control — primary reference U.S. Government activity |
NSN 5305-01-646-1391 is a Screw,close Tolerance, manufactured by Saturn Fasteners Inc, classified under FSC 5305, Screws. Status: active.
NSN 5305-01-646-1391 has 7 manufacturer part numbers on file: JSFB15E08-6 (Saturn Fasteners Inc), JSFB15E08-6 (Pilgrim Screw Corp Dba Pilgrim Aerospace Fasteners Div Arizona), JSFB15E08-6 (Heartland Precision Fasteners Inc), JSFB15E08-6 (Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company), JSFB15E08-6 (Howmet Global Fastening Systems Inc Div City of Industry Operations) 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.