The Screw,cap,socket Head, cataloged under National Stock Number 5305-00-310-5259, is classified within Federal Supply Class 5305 (Screws) of the Hardware and Abrasives group. The manufacturer of record is Cbs Fasteners, Llc. Government technical data includes 17 specifications, cited from the U.S. Government catalog. The record lists 10 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 7 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5305-00-310-5259 |
| Primary Part Number | 965811-253C |
| Item Name | Screw,cap,socket Head |
| FSC / FSG | 5305 / 53 — Screws |
| Manufacturer | Cbs Fasteners, Llc |
| Status | ACTIVE |
| Width Across Flats | 0.141 INCHES MINIMUM AND 0.143 INCHES MAXIMUM IN |
| Head Height | 0.159 INCHES MINIMUM AND 0.164 INCHES MAXIMUM IN |
| Fastener Length | 0.234 INCHES MINIMUM AND 0.266 INCHES MAXIMUM IN |
| Surface Treatment Document and Classification | QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Thread Length | 0.172 INCHES MINIMUM AND 0.266 INCHES MAXIMUM IN |
| Material Document and Classification | AMS5731 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Nominal Thread Diameter | 0.164 INCHES IN |
| Head Style | FLAT CHAMFER |
| Thread Direction | RIGHT-HAND |
| Surface Treatment | PASSIVATE OVERALL |
| Minimum Tensile Strength | 160000 POUNDS PER SQUARE INCH LBS |
| Internal Drive Style | HEXAGON |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 32 |
| Material | IRON ALLOY 660 OVERALL |
| Thread Series Designator | UNJC |
| Head Diameter | 0.262 INCHES MINIMUM AND 0.270 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 |
|---|---|
| 965811-253C PRIMARY | Cbs Fasteners, Llc (USA) |
| 3V2111-253C PRIMARY | 3-V Fastener Co., Inc. (USA) |
| FS2001-08-253C PRIMARY | Fastener Innovation Technology, Inc. Dba F I T (USA) |
| A0L4166-253 PRIMARY | All Manufacturers, Inc. Dba Allied Harbor Aerospace Fasteners (USA) |
| E723-253 PRIMARY | Huck International, Inc (USA) |
| 965811-253C PRIMARY | Ideal Fasteners, Inc. Dba Ideal Fasteners Inc (USA) |
| PBF1069-253C PRIMARY | Sps Technologies Llc Dba PB Fasteners Div PB Fasteners (USA) |
| AIC811-08-4 PRIMARY | Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company (USA) |
| BCP50001-253C PRIMARY | B & B Specialties Inc (USA) |
| 73573-98-4 PRIMARY | Sps Technologies, Llc Dba PB Fasteners (USA) |
| Reference | Meaning |
|---|---|
| 8219-253 | 5/9 Secondary reference First American Sales Co Inc |
| 965811-253C | 7/2 Vendor item drawing reference U.S. Government activity |
| 73573-95-4C | 5/9 Secondary reference Sps Technologies, Llc Dba PB Fasteners |
| E723-253 | 5/9 Secondary reference U.S. Government activity |
| 73573-95-4C | 5/9 Secondary reference Sps Technologies Inc |
| CBS811-08-4 | 5/9 Secondary reference Cbs Fasteners, Llc |
| 10125134 | 6/9 Informative reference only Nimikkeistokeskus Ncb Finland |
NSN 5305-00-310-5259 is a Screw,cap,socket Head, manufactured by Cbs Fasteners, Llc, classified under FSC 5305, Screws. Status: active.
NSN 5305-00-310-5259 has 10 manufacturer part numbers on file: 965811-253C (Cbs Fasteners, Llc), 3V2111-253C (3-V Fastener Co., Inc.), FS2001-08-253C (Fastener Innovation Technology, Inc. Dba F I T), A0L4166-253 (All Manufacturers, Inc. Dba Allied Harbor Aerospace Fasteners), E723-253 (Huck International, Inc) and 5 more.
Key specifications for 965811-253C: Width Across Flats: 0.141 INCHES MINIMUM AND 0.143 INCHES MAXIMUM IN; Head Height: 0.159 INCHES MINIMUM AND 0.164 INCHES MAXIMUM IN; Fastener Length: 0.234 INCHES MINIMUM AND 0.266 INCHES MAXIMUM IN; Surface Treatment Document and Classification: QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL. 17 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.