The Screw,tapping, cataloged under National Stock Number 5305-00-998-3243, is classified within Federal Supply Class 5305 (Screws) of the Hardware and Abrasives group. The manufacturer of record is Textron Aviation Inc. Government technical data includes 11 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 5305-00-998-3243 |
| Primary Part Number | S1022Z4-6 |
| Item Name | Screw,tapping |
| FSC / FSG | 5305 / 53 — Screws |
| Manufacturer | Textron Aviation Inc |
| Status | ACTIVE |
| Nonmachine Nominal Thread Diameter | 0.112 INCHES IN |
| Fastener Length | 0.375 INCHES NOMINAL IN |
| Nonmachine Thread Style | DOG TYPE (TYPE B OR C) |
| Material Document and Classification | SAE J403 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Features Provided | CASEHARDENED |
| Head Style | FLAT COUNTERSUNK |
| Surface Treatment | CADMIUM OVERALL |
| Internal Drive Style | CROSS RECESS TYPE 1 |
| Countersink Angle | 99.0 DEGREES MINIMUM AND 101.0 DEGREES MAXIMUM |
| Material | STEEL COMP 1010 OVERALL |
| Head Diameter | 0.207 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 |
|---|---|
| S1022Z4-6 PRIMARY | Textron Aviation Inc (USA) |
| Reference | Meaning |
|---|---|
| S1022Z4-6 | 3/9 Design control — primary reference Cessna Aircraft Company Dba Textron Aviation |
NSN 5305-00-998-3243 is a Screw,tapping, manufactured by Textron Aviation Inc, classified under FSC 5305, Screws. Status: active.
NSN 5305-00-998-3243 has 1 manufacturer part number on file: S1022Z4-6 (Textron Aviation Inc).
Key specifications for S1022Z4-6: Nonmachine Nominal Thread Diameter: 0.112 INCHES IN; Fastener Length: 0.375 INCHES NOMINAL IN; Nonmachine Thread Style: DOG TYPE (TYPE B OR C); Material Document and Classification: SAE J403 ASSN STD SINGLE MATERIAL RESPONSE OVERALL. 11 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.