The Screw,close Tolerance, cataloged under National Stock Number 5305-01-524-1504, is classified within Federal Supply Class 5305 (Screws) of the Hardware and Abrasives group. The manufacturer of record is B & B Specialties Inc. Government technical data includes 21 specifications, cited from the U.S. Government catalog. The record lists 11 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5305-01-524-1504 |
| Primary Part Number | 120-225-08-16 |
| Item Name | Screw,close Tolerance |
| FSC / FSG | 5305 / 53 — Screws |
| Manufacturer | B & B Specialties Inc |
| Status | ACTIVE |
| Extended Washer Thickness | 0.025 INCHES NOMINAL IN |
| Head Height | 0.087 INCHES NOMINAL IN |
| Fastener Length | 1.118 INCHES NOMINAL IN |
| Surface Treatment Document and Classification | QQ-P-416, TYPE 2, CLASS2 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Extended Washer Diameter | 0.375 INCHES NOMINAL IN |
| Thread Length | 1.031 INCHES NOMINAL IN |
| Criticality Code Justification | AGAV |
| Material Document and Classification | AMS6415 ASSN STD 1ST MATERIAL RESPONSE OR MIL-S-6049 MIL SPEC 2ND MATERIAL RESPONSE OVERALL |
| Nominal Thread Diameter | 0.164 INCHES IN |
| Head Style | ROUND EXTENDED WASHER |
| Thread Direction | RIGHT-HAND |
| Grip Length | 0.594 INCHES NOMINAL IN |
| Grip Diameter | 0.163 INCHES NOMINAL IN |
| Surface Treatment | CADMIUM OVERALL |
| Minimum Tensile Strength | 1425 POUNDS PER SQUARE INCH LBS |
| Internal Drive Style | CRUCIFORM RIBBED |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 32 |
| Material | STEEL COMP 4340 OVERALL |
| Thread Series Designator | UNJC |
| Head Diameter | 0.312 INCHES NOMINAL IN |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | Y |
| Part Number | Manufacturer |
|---|---|
| 120-225-08-16 PRIMARY | B & B Specialties Inc (USA) |
| 120-225-08-16 PRIMARY | B & B Specialties Inc Dba Gs Aerospace Div Gs Aerospace (USA) |
| 120-225-08-16 PRIMARY | Fastener Innovation Technology, Inc. Dba F I T (USA) |
| 120-225-08-16 PRIMARY | Heartland Precision Fasteners Inc (USA) |
| 120-225-08-16 PRIMARY | Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company (USA) |
| 120-225-08-16 PRIMARY | 3-V Fastener Co., Inc. (USA) |
| 120-225-08-16 PRIMARY | Pilgrim Screw Corp Dba Pilgrim Aerospace Fasteners Div Arizona (USA) |
| 120-225-08-16 PRIMARY | Sps Technologies, Llc Dba PB Fasteners (USA) |
| 120-225-08-16 PRIMARY | Saturn Fasteners Inc (USA) |
| 120-225-08-16 PRIMARY | Pilgrim Screw Corporation Dba Pilgrim Aerospace Fasteners (USA) |
| 120-225-08-16 PRIMARY | Lfc Industries, Inc. (USA) |
| Reference | Meaning |
|---|---|
| 120-225-08-16 | 3/2 Design control — primary reference U.S. Government activity |
| 120-225-08-16 | 1/2 Source control — Government-approved source U.S. Government activity |
NSN 5305-01-524-1504 is a Screw,close Tolerance, manufactured by B & B Specialties Inc, classified under FSC 5305, Screws. Status: active.
NSN 5305-01-524-1504 has 11 manufacturer part numbers on file: 120-225-08-16 (B & B Specialties Inc), 120-225-08-16 (B & B Specialties Inc Dba Gs Aerospace Div Gs Aerospace), 120-225-08-16 (Fastener Innovation Technology, Inc. Dba F I T), 120-225-08-16 (Heartland Precision Fasteners Inc), 120-225-08-16 (Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company) and 6 more.
Key specifications for 120-225-08-16: Extended Washer Thickness: 0.025 INCHES NOMINAL IN; Head Height: 0.087 INCHES NOMINAL IN; Fastener Length: 1.118 INCHES NOMINAL IN; Surface Treatment Document and Classification: QQ-P-416, TYPE 2, CLASS2 FED SPEC SINGLE TREATMENT RESPONSE OVERALL. 21 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.