The Screw,cap,socket Head, cataloged under National Stock Number 5305-01-658-1667, is classified within Federal Supply Class 5305 (Screws) of the Hardware and Abrasives group. The manufacturer of record is Naval Inventory Control Point Mechanicsburg. Government technical data includes 2 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 5305-01-658-1667 |
| Primary Part Number | M1222RN10C334NCNNL1 |
| Item Name | Screw,cap,socket Head |
| FSC / FSG | 5305 / 53 — Screws |
| Manufacturer | Naval Inventory Control Point Mechanicsburg |
| Status | ACTIVE |
| Criticality Code Justification | ZZZW |
| Departure From Cited Document | MATERIAL CONTROLLED IAW NAVSEA 0948-LP-045-7010 MATERIAL CONTROL STANDARD FOR LEVEL I ITEMS |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | S |
| Part Number | Manufacturer |
|---|---|
| M1222RN10C334NCNNL1 | Naval Inventory Control Point Mechanicsburg (USA) |
| 0.625-11UNC-3AX2.125LG NICUALL1 | Naval Inventory Control Point Mechanicsburg (USA) |
| Reference | Meaning |
|---|---|
| 0.625-11UNC-3AX2.125LG NICUAL | 4/1 Identification reference U.S. Government activity |
| M1222RN10C334NCNN | 4/1 Identification reference U.S. Government activity |
NSN 5305-01-658-1667 is a Screw,cap,socket Head, manufactured by Naval Inventory Control Point Mechanicsburg, classified under FSC 5305, Screws. Status: active.
NSN 5305-01-658-1667 has 2 manufacturer part numbers on file: M1222RN10C334NCNNL1 (Naval Inventory Control Point Mechanicsburg), 0.625-11UNC-3AX2.125LG NICUALL1 (Naval Inventory Control Point Mechanicsburg).
Key specifications for M1222RN10C334NCNNL1: Criticality Code Justification: ZZZW; Departure From Cited Document: MATERIAL CONTROLLED IAW NAVSEA 0948-LP-045-7010 MATERIAL CONTROL STANDARD FOR LEVEL I ITEMS; Part Name Assigned by Controlling Agency: CAP,SCREW SOCKET HEAD. 2 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.