The Screw,externally Relieved Body, cataloged under National Stock Number 5305-01-487-5189, is classified within Federal Supply Class 5305 (Screws) of the Hardware and Abrasives group. The manufacturer of record is Meggitt Defense Systems, Inc. Dba Meggitt Defense Systems Inc. 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 | 5305-01-487-5189 |
| Primary Part Number | 397532-1 |
| Item Name | Screw,externally Relieved Body |
| FSC / FSG | 5305 / 53 — Screws |
| Manufacturer | Meggitt Defense Systems, Inc. Dba Meggitt Defense Systems Inc |
| Status | ACTIVE |
| Fastener Length | 0.312 INCHES NOMINAL IN |
| Surface Treatment Document and Classification | QQ-P-416,TYPE II,CL 3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Thread Length | 0.102 INCHES NOMINAL IN |
| Material Document and Classification | MIL-S-6758 MIL SPEC 1ST MATERIAL RESPONSE OR MIL-S-5000 MIL SPEC 2ND MATERIAL RESPONSE OR MIL-S-6049 MIL SPEC 3RD MATERIAL RESPONSE OVERALL |
| First Diameter From Head | 0.080 INCHES MINIMUM AND 0.089 INCHES MAXIMUM IN |
| Nominal Thread Diameter | 0.112 INCHES IN |
| Head Style | FLAT COUNTERSUNK |
| Thread Direction | RIGHT-HAND |
| Distance From Largest Bearing Surface of Head to End of First Diameter | 0.210 INCHES NOMINAL IN |
| Externally Relieved Body Diameter Quantity | 1 |
| Surface Treatment | CADMIUM OVERALL |
| Internal Drive Style | CROSS RECESS TYPE 1 |
| Countersink Angle | 99.0 DEGREES MINIMUM AND 101.0 DEGREES MAXIMUM |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 40 |
| Material | STEEL COMP 4130 OR STEEL COMP 4340 OR STEEL COMP 8740 OVERALL |
| Thread Series Designator | UNJC |
| Head Diameter | 0.213 INCHES MINIMUM AND 0.225 INCHES MAXIMUM 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 |
|---|---|
| 397532-1 PRIMARY | Meggitt Defense Systems, Inc. Dba Meggitt Defense Systems Inc (USA) |
NSN 5305-01-487-5189 is a Screw,externally Relieved Body, manufactured by Meggitt Defense Systems, Inc. Dba Meggitt Defense Systems Inc, classified under FSC 5305, Screws. Status: active.
NSN 5305-01-487-5189 has 1 manufacturer part number on file: 397532-1 (Meggitt Defense Systems, Inc. Dba Meggitt Defense Systems Inc).
Key specifications for 397532-1: Fastener Length: 0.312 INCHES NOMINAL IN; Surface Treatment Document and Classification: QQ-P-416,TYPE II,CL 3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL; Thread Length: 0.102 INCHES NOMINAL IN; Material Document and Classification: MIL-S-6758 MIL SPEC 1ST MATERIAL RESPONSE OR MIL-S-5000 MIL SPEC 2ND MATERIAL RESPONSE OR MIL-S-6049 MIL SPEC 3RD MATERIAL RESPONSE OVERALL. 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.