The Screw,tapping, cataloged under National Stock Number 5305-01-498-9591, is classified within Federal Supply Class 5305 (Screws) of the Hardware and Abrasives group. The manufacturer of record is Standard Bolt Nut and Screw Co. Government technical data includes 9 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5305-01-498-9591 |
| Primary Part Number | 4N25TXPS |
| Item Name | Screw,tapping |
| FSC / FSG | 5305 / 53 — Screws |
| Manufacturer | Standard Bolt Nut and Screw Co |
| Status | ACTIVE |
| Nonmachine Nominal Thread Diameter | 0.122 INCHES IN |
| Head Height | 0.058 MILLIMETERS MINIMUM AND 0.068 MILLIMETERS MAXIMUM MM |
| Fastener Length | 0.250 INCHES NOMINAL IN |
| Nonmachine Thread Style | GIMLET POINT (TYPE A, AB OR BA) |
| Material Document and Classification | 101025-Z MFR REF ALL MATERIAL RESPONSES OVERALL |
| Head Style | FILLISTER |
| Internal Drive Style | CROSS RECESS TYPE II |
| Material | STEEL OVERALL |
| Head Diameter | 0.205 MILLIMETERS MINIMUM AND 0.219 MILLIMETERS MAXIMUM MM |
| 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 |
|---|---|
| 4N25TXPS PRIMARY | Standard Bolt Nut and Screw Co (USA) |
| Reference | Meaning |
|---|---|
| 101025-Z | 7/2 Vendor item drawing reference Dh Instruments Inc. |
NSN 5305-01-498-9591 is a Screw,tapping, manufactured by Standard Bolt Nut and Screw Co, classified under FSC 5305, Screws. Status: active.
NSN 5305-01-498-9591 has 1 manufacturer part number on file: 4N25TXPS (Standard Bolt Nut and Screw Co).
Key specifications for 4N25TXPS: Nonmachine Nominal Thread Diameter: 0.122 INCHES IN; Head Height: 0.058 MILLIMETERS MINIMUM AND 0.068 MILLIMETERS MAXIMUM MM; Fastener Length: 0.250 INCHES NOMINAL IN; Nonmachine Thread Style: GIMLET POINT (TYPE A, AB OR BA). 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.