The Screw,cap,hexagon Head, cataloged under National Stock Number 5305-01-644-2127, is classified within Federal Supply Class 5305 (Screws) of the Hardware and Abrasives group. The manufacturer of record is Naval Inventory Control Point Mechanicsburg. The record lists 6 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 6 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Item Name | Screw,cap,hexagon Head |
| FSC / FSG | 5305 — Screws (FSG 53) |
| Manufacturers | Naval Inventory Control Point Mechanicsburg (CAGE 03950) |
| Parameter | Value |
|---|---|
| NSN | 5305-01-644-2127 |
| Primary Part Number | 0.375-16UNC-3AX0.500LG NICUD4 |
| Item Name | Screw,cap,hexagon Head |
| FSC / FSG | 5305 / 53 — Screws |
| Manufacturer | Naval Inventory Control Point Mechanicsburg |
| Status | ACTIVE |
| 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 |
|---|---|
| 0.375-16UNC-3AX0.500LG NICUD4 | Naval Inventory Control Point Mechanicsburg (USA) |
| H547-0001-264382086-22D4 | Naval Inventory Control Point Mechanicsburg (USA) |
| 845-7284928 ITEM 22D4 | Naval Inventory Control Point Mechanicsburg (USA) |
| 2643-820-86 ITEM 22D4 | Naval Inventory Control Point Mechanicsburg (USA) |
| 7383858-264382086-22D4 | Naval Inventory Control Point Mechanicsburg (USA) |
| FF-S-86 TYPEVI 0.375-16UNC-3AXD4 | Naval Inventory Control Point Mechanicsburg (USA) |
| Reference | Meaning |
|---|---|
| FF-S-86 TYPEVI 0.375-16UNC-3AX0. | 5/1 Secondary reference U.S. Government activity |
| H547-0001-264382086-22 | 5/1 Secondary reference U.S. Government activity |
| 0.375-16UNC-3AX0.500LG NICU | 5/1 Secondary reference U.S. Government activity |
| 2643-820-86 ITEM 22 | 5/1 Secondary reference U.S. Government activity |
| 845-7284928 ITEM 22 | 5/1 Secondary reference Naval Sea Systems Command |
| 7383858-264382086-22 | 3/1 Design control — primary reference Naval Sea Systems Command |
NSN 5305-01-644-2127 is a Screw,cap,hexagon Head, manufactured by Naval Inventory Control Point Mechanicsburg, classified under FSC 5305, Screws. Status: active.
NSN 5305-01-644-2127 has 6 manufacturer part numbers on file: 0.375-16UNC-3AX0.500LG NICUD4 (Naval Inventory Control Point Mechanicsburg), H547-0001-264382086-22D4 (Naval Inventory Control Point Mechanicsburg), 845-7284928 ITEM 22D4 (Naval Inventory Control Point Mechanicsburg), 2643-820-86 ITEM 22D4 (Naval Inventory Control Point Mechanicsburg), 7383858-264382086-22D4 (Naval Inventory Control Point Mechanicsburg) and 1 more.
1 possible match (shared part number, not a government interchangeability claim): 5305-01-673-3918. Verify interchangeability with system specifications before substitution.
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.