The Bolt,shoulder, cataloged under National Stock Number 5306-01-665-9998, is classified within Federal Supply Class 5306 (Bolts) of the Hardware and Abrasives group. The manufacturer of record is M.s. Aerospace Inc. Dba Ms Aerospace Inc. The record lists 8 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | Bolt,shoulder |
| FSC / FSG | 5306 — Bolts (FSG 53) |
| Manufacturers | M.s. Aerospace Inc. Dba Ms Aerospace Inc (CAGE 0UCY9); Howmet Global Fastening Systems Inc Div City of Industry Operations (CAGE 1RC86); Sps Technologies Llc Dba PB Fasteners Div PB Fasteners (CAGE 27624); Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company (CAGE 06725); Sps Technologies, Llc Dba PB Fasteners (CAGE 56878) |
| Parameter | Value |
|---|---|
| NSN | 5306-01-665-9998 |
| Primary Part Number | JSFB21E4A-8-3U |
| Item Name | Bolt,shoulder |
| FSC / FSG | 5306 / 53 — Bolts |
| Manufacturer | M.s. Aerospace Inc. Dba Ms Aerospace 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 |
|---|---|
| JSFB21E4A-8-3U PRIMARY | M.s. Aerospace Inc. Dba Ms Aerospace Inc (USA) |
| JSFB21E4A-8-3U PRIMARY | Howmet Global Fastening Systems Inc Div City of Industry Operations (USA) |
| JSFB21E4A-8-3U PRIMARY | Sps Technologies Llc Dba PB Fasteners Div PB Fasteners (USA) |
| JSFB21E4A-8-3U PRIMARY | Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company (USA) |
| JSFB21E4A-8-3U PRIMARY | Sps Technologies, Llc Dba PB Fasteners (USA) |
| JSFB21E4A-8-3U PRIMARY | Lfc Industries, Inc. (USA) |
| JSFB21E4A-8-3U PRIMARY | Saturn Fasteners Inc (USA) |
| JSFB21E4A-8-3U PRIMARY | B & B Specialties Inc Dba Gs Aerospace Div Gs Aerospace (USA) |
| Reference | Meaning |
|---|---|
| JSFB21 | D/9 Drawing number reference only U.S. Government activity |
| JSFB21E4A-8-3U | 1/2 Source control — Government-approved source U.S. Government activity |
NSN 5306-01-665-9998 is a Bolt,shoulder, manufactured by M.s. Aerospace Inc. Dba Ms Aerospace Inc, classified under FSC 5306, Bolts. Status: active.
NSN 5306-01-665-9998 has 8 manufacturer part numbers on file: JSFB21E4A-8-3U (M.s. Aerospace Inc. Dba Ms Aerospace Inc), JSFB21E4A-8-3U (Howmet Global Fastening Systems Inc Div City of Industry Operations), JSFB21E4A-8-3U (Sps Technologies Llc Dba PB Fasteners Div PB Fasteners), JSFB21E4A-8-3U (Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company), JSFB21E4A-8-3U (Sps Technologies, Llc Dba PB Fasteners) and 3 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.