The Screw,cap,socket Head, cataloged under National Stock Number 5305-00-852-4337, is classified within Federal Supply Class 5305 (Screws) of the Hardware and Abrasives group. The manufacturer of record is Curtiss-Wright Controls, Inc. Div Actuation Division. Government technical data includes 18 specifications, cited from the U.S. Government catalog. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5305-00-852-4337 |
| Primary Part Number | 518D13 |
| Item Name | Screw,cap,socket Head |
| FSC / FSG | 5305 / 53 — Screws |
| Manufacturer | Curtiss-Wright Controls, Inc. Div Actuation Division |
| Status | ACTIVE |
| Width Across Flats | 0.251 INCHES MINIMUM AND 0.253 INCHES MAXIMUM IN |
| Head Height | 0.305 INCHES NOMINAL IN |
| Fastener Length | 0.440 INCHES NOMINAL IN |
| Thread Length | 0.440 INCHES MINIMUM IN |
| Hardness Rating | 32.0 ROCKWELL C MINIMUM AND 36.0 ROCKWELL C MAXIMUM OVERALL |
| Hole Configuration Style | ROUND |
| Material Document and Classification | AMS 6322 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Nominal Thread Diameter | 0.312 INCHES IN |
| Head Style | FLAT CHAMFER |
| Thread Direction | RIGHT-HAND |
| Internal Drive Style | HEXAGON |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 24 |
| Material | STEEL COMP 8740 OVERALL |
| Hole Quantity | 6 |
| Hole Type | DRILLED |
| Hole Diameter | 0.062 INCHES NOMINAL IN |
| Head Diameter | 0.500 INCHES NOMINAL IN |
| 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 |
|---|---|
| 518D13 PRIMARY | Curtiss-Wright Controls, Inc. Div Actuation Division (USA) |
NSN 5305-00-852-4337 is a Screw,cap,socket Head, manufactured by Curtiss-Wright Controls, Inc. Div Actuation Division, classified under FSC 5305, Screws. Status: active.
NSN 5305-00-852-4337 has 1 manufacturer part number on file: 518D13 (Curtiss-Wright Controls, Inc. Div Actuation Division).
Key specifications for 518D13: Width Across Flats: 0.251 INCHES MINIMUM AND 0.253 INCHES MAXIMUM IN; Head Height: 0.305 INCHES NOMINAL IN; Fastener Length: 0.440 INCHES NOMINAL IN; Thread Length: 0.440 INCHES MINIMUM IN. 18 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.