The Screw,cap,socket Head, cataloged under National Stock Number 5305-00-980-9563, is classified within Federal Supply Class 5305 (Screws) of the Hardware and Abrasives group. The manufacturer of record is Sps Technologies, Llc Dba PB Fasteners. Government technical data includes 15 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5305-00-980-9563 |
| Primary Part Number | 16990P-98C-6B |
| Item Name | Screw,cap,socket Head |
| FSC / FSG | 5305 / 53 — Screws |
| Manufacturer | Sps Technologies, Llc Dba PB Fasteners |
| Status | ACTIVE |
| Width Across Flats | 0.090 INCHES NOMINAL IN |
| Fastener Length | 0.375 INCHES NOMINAL IN |
| Thread Length | 0.263 INCHES NOMINAL IN |
| Hardness Rating | 36.0 ROCKWELL C MINIMUM AND 40.0 ROCKWELL C MAXIMUM OVERALL |
| Material Document and Classification | AMS 6300 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Nominal Thread Diameter | 0.164 INCHES IN |
| Head Style | FLAT COUNTERSUNK |
| Thread Direction | RIGHT-HAND |
| Internal Drive Style | HEXAGON |
| Countersink Angle | 81.0 DEGREES NOMINAL |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 32 |
| Material | STEEL COMP 4037 OVERALL |
| Thread Series Designator | UNIFIED NATIONAL COARSE (UNC) |
| Head Diameter | 0.311 INCHES MINIMUM AND 0.359 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 |
|---|---|
| 16990P-98C-6B | Sps Technologies, Llc Dba PB Fasteners (USA) |
| 2-300-199-01 | Baykar Piaggio Aerospace S.p.a. (ITA) |
| Reference | Meaning |
|---|---|
| 94700-E-98C-6B | 3/2 Design control — primary reference U.S. Government activity |
| 2-300-199-01 | 7/2 Vendor item drawing reference U.S. Government activity |
| 16990N-98C-6B | 5/9 Secondary reference Sps Technologies, Llc Dba PB Fasteners |
NSN 5305-00-980-9563 is a Screw,cap,socket Head, manufactured by Sps Technologies, Llc Dba PB Fasteners, classified under FSC 5305, Screws. Status: active.
NSN 5305-00-980-9563 has 2 manufacturer part numbers on file: 16990P-98C-6B (Sps Technologies, Llc Dba PB Fasteners), 2-300-199-01 (Baykar Piaggio Aerospace S.p.a.).
Key specifications for 16990P-98C-6B: Width Across Flats: 0.090 INCHES NOMINAL IN; Fastener Length: 0.375 INCHES NOMINAL IN; Thread Length: 0.263 INCHES NOMINAL IN; Hardness Rating: 36.0 ROCKWELL C MINIMUM AND 40.0 ROCKWELL C MAXIMUM OVERALL. 15 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.