The Screw,cap,socket Head, cataloged under National Stock Number 5305-01-433-3814, 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 9 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through both NSN and commercial part number lookups. 6 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5305-01-433-3814 |
| Primary Part Number | 595-6401267 ITEM 57L1 |
| Item Name | Screw,cap,socket Head |
| FSC / FSG | 5305 / 53 — Screws |
| Manufacturer | Naval Inventory Control Point Mechanicsburg |
| Status | ACTIVE |
| Fastener Length | 0.750 INCHES MAXIMUM IN |
| Criticality Code Justification | ZZZX |
| Material Document and Classification | QQ-N-286 GR 500 FED SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Nominal Thread Diameter | 0.250 INCHES IN |
| Departure From Cited Designator | MATERIAL CONTROLLED IAW NAVSEA 0948-LP-045-7010 MATERIAL CONTROL STANDARD FOR LEVEL I ITEMS |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 20 |
| Material | NICKEL ALLOY OVERALL |
| Thread Series Designator | UNRC |
| 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 |
|---|---|
| 595-6401267 ITEM 57L1 | Naval Inventory Control Point Mechanicsburg (USA) |
| 211067202L1 | Naval Inventory Control Point Mechanicsburg (USA) |
| Reference | Meaning |
|---|---|
| 595-6401267 ITEM 57 | 5/1 Secondary reference Naval Sea Systems Command |
| 1/4-20UNRC-3A X 3/4TYIISELF-LOL1 | 5/1 Secondary reference Naval Inventory Control Point Mechanicsburg |
| 211067202 | 3/1 Design control — primary reference Naval Sea Systems Command |
| 1/4-20UNRC-3A X 3/4TYIISELF-LO | 4/1 Identification reference U.S. Government activity |
| MIL-DTL-1222 QQ-N-286 GR500L1 | 5/1 Secondary reference Naval Inventory Control Point Mechanicsburg |
| MIL-DTL-1222 QQ-N-286 GR500 | 4/1 Identification reference U.S. Government activity |
NSN 5305-01-433-3814 is a Screw,cap,socket Head, manufactured by Naval Inventory Control Point Mechanicsburg, classified under FSC 5305, Screws. Status: active.
NSN 5305-01-433-3814 has 2 manufacturer part numbers on file: 595-6401267 ITEM 57L1 (Naval Inventory Control Point Mechanicsburg), 211067202L1 (Naval Inventory Control Point Mechanicsburg).
Key specifications for 595-6401267 ITEM 57L1: Fastener Length: 0.750 INCHES MAXIMUM IN; Criticality Code Justification: ZZZX; Material Document and Classification: QQ-N-286 GR 500 FED SPEC SINGLE MATERIAL RESPONSE OVERALL; Nominal Thread Diameter: 0.250 INCHES IN. 9 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.