# NSN 5305-00-558-4638: Screw, Close Tolerance

NSN 5305-00-558-4638 (also written 5305005584638; NIIN 00-558-4638) is a screw, close tolerance in Federal Supply Class 5305, Screws. 2 manufacturer part numbers from 1 supplier are on record. It was last purchased in Aug 2026.

## Identification

- NSN: 5305-00-558-4638 (5305005584638)
- NIIN: 00-558-4638 (005584638)
- Item name: SCREW,CLOSE TOLERANCE
- Federal Supply Class: [FSC 5305 Screws](https://nsnexplorer.com/fsc/5305/)
- Federal Supply Group: [FSG 53](https://nsnexplorer.com/group/53/)
- Acquisition method suffix code: AMSC G: the government has a complete data package and the rights to use it. (observed 2026-10-28)
- Acquisition method code: 1

## Characteristics

| Code | Requirement | Reply |
| --- | --- | --- |
| THSD | THREAD SERIES DESIGNATOR | UNF |
| CMLP | THREAD QUANTITY PER INCH | 24 |
| CSYM | SURFACE FINISH | GRIP MICROINCHES 32.0 |
| SFTT | SURFACE TREATMENT | OVERALL CADMIUM AND CHROMATE |
| CQBC | MINIMUM TENSILE STRENGTH | POUNDS PER SQUARE INCH 160000 |
| AHYM | NOMINAL THREAD DIAMETER | INCHES 0.312 |
| ANEE | GRIP LENGTH | INCHES MINIMUM 0.178 AND INCHES MAXIMUM 0.198 |
| MATT | MATERIAL | OVERALL STEEL COMP 4140 OR STEEL COMP E4340 OR STEEL COMP 6150 OR STEEL COMP 8735 OR STEEL COMP 8740 |
| MDCL | MATERIAL DOCUMENT AND CLASSIFICATION | OVERALL MIL SPEC 1ST MATERIAL RESPONSE -IL-S-5626 OR MIL SPEC 2ND MATERIAL RESPONSE -IL-S-5000 OR MIL SPEC 3RD MATERIAL RESPONSE -IL-S-8503 OR MIL SPEC 4TH MATERIAL RESPONSE -IL-S-6098 OR MIL SPEC 5TH MATERIAL RESPONSE -IL-S-6049 |
| ZZZK | SPECIFICATION/STANDARD DATA | PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD 80205-NAS335 |
| STDC | SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | OVERALL FED SPEC ALL TREATMENT RESPONSES QQ--416,TY 2,CL 3 |
| AAJD | THREAD CLASS | 3A |
| AAJF | THREAD DIRECTION | RIGHT-HAND |
| AASA | THREAD LENGTH | INCHES MINIMUM 0.505 AND INCHES MAXIMUM 0.572 |
| AASB | FASTENER LENGTH | INCHES MINIMUM 0.703 AND INCHES MAXIMUM 0.750 |
| AASK | HEAD STYLE | — |
| AASL | HEAD DIAMETER | INCHES MINIMUM 0.625 AND INCHES MAXIMUM 0.635 |
| AAUR | GRIP DIAMETER | INCHES MINIMUM 0.3108 AND INCHES MAXIMUM 0.3117 |
| ABQZ | INTERNAL DRIVE STYLE | — |
| CQFM | HARDNESS RATING | OVERALL ROCKWELL C MINIMUM 36.0 AND ROCKWELL C MAXIMUM 40.0 |
| CRSQ | COUNTERSINK ANGLE | DEGREES MINIMUM 99.0 AND DEGREES MAXIMUM 101.0 |

## Part numbers

| Part number | CAGE | Supplier | Source |
| --- | --- | --- | --- |
| NAS335CFA5 | 80205 | NATIONAL AEROSPACE STANDARDS COMMITTEE AEROSPACE INDUSTRIES ASSOCIATION OF AMERICA INC NOT FOR RFQ OR SOLICITATION USE | [flis](https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/) |
| NAS335CPA5 | 80205 | NATIONAL AEROSPACE STANDARDS COMMITTEE AEROSPACE INDUSTRIES ASSOCIATION OF AMERICA INC NOT FOR RFQ OR SOLICITATION USE | [flis](https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/) |

## Contract awards

Newest first.

| Date | Award | Description | Recipient | Amount |
| --- | --- | --- | --- | --- |
| 2026-08-28 | [SPE4A124P0904](https://www.dibbs.bsm.dla.mil/Awards/AwdRecs.aspx?category=awdnsn&TypeSrch=cq&Value=5305005584638) | SCREW, CLOSE TOLERAN | STANDARD AERO PARTS, INC | $29,233.60 |

## Sources

- DLA DIBBS RFQs for this NSN: https://www.dibbs.bsm.dla.mil/RFQ/RFQNsn.aspx?value=5305005584638&category=nsn
- DLA DIBBS awards for this NSN: https://www.dibbs.bsm.dla.mil/Awards/AwdRecs.aspx?category=awdnsn&TypeSrch=cq&Value=5305005584638
- AMSC record: https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/
- USAspending contract actions (each award above links to its record)
- All data is public U.S. government data; every row above links to its source record where one exists.

Canonical page: https://nsnexplorer.com/nsn/5305-00-558-4638/
JSON: https://nsnexplorer.com/api/nsn/5305-00-558-4638.json