# NSN 5305-01-170-8503: Screw, Close Tolerance

NSN 5305-01-170-8503 (also written 5305011708503; NIIN 01-170-8503) is a screw, close tolerance in Federal Supply Class 5305, Screws. 30 manufacturer part numbers from 22 suppliers are on record. No purchases are on record yet.

## Identification

- NSN: 5305-01-170-8503 (5305011708503)
- NIIN: 01-170-8503 (011708503)
- 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 C: needs engineering source approval; other sources must qualify first. (observed 2026-10-10)
- Acquisition method code: 1

## Characteristics

| Code | Requirement | Reply |
| --- | --- | --- |
| AAJD | THREAD CLASS | 3A |
| AAJF | THREAD DIRECTION | RIGHT-HAND |
| AASA | THREAD LENGTH | INCHES MINIMUM 0.381 AND INCHES MAXIMUM 0.431 |
| AASB | FASTENER LENGTH | INCHES MINIMUM 0.891 AND INCHES MAXIMUM 0.921 |
| AASK | HEAD STYLE | — |
| AASL | HEAD DIAMETER | INCHES MINIMUM 0.2966 AND INCHES MAXIMUM 0.3016 |
| AAUR | GRIP DIAMETER | INCHES MINIMUM 0.1885 AND INCHES MAXIMUM 0.1895 |
| ABQZ | INTERNAL DRIVE STYLE | — |
| AHYM | NOMINAL THREAD DIAMETER | INCHES 0.190 |
| ANEE | GRIP LENGTH | INCHES MINIMUM 0.490 AND INCHES MAXIMUM 0.510 |
| CMLP | THREAD QUANTITY PER INCH | 32 |
| CRSQ | COUNTERSINK ANGLE | DEGREES NOMINAL 101.0 |
| MATT | MATERIAL | OVERALL NICKEL ALLOY 718 |
| MDCL | MATERIAL DOCUMENT AND CLASSIFICATION | OVERALL ASSN STD SINGLE MATERIAL RESPONSE A-S 5662 |
| SFTT | SURFACE TREATMENT | OVERALL ALUMINUM AND CHROMATE |
| STDC | SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | OVERALL MIL SPEC SINGLE TREATMENT RESPONSE -IL-C-83488 TYE 2 CLASS 3 |
| THSD | THREAD SERIES DESIGNATOR | UNIFIED NATIONAL JOINT FINE (UNJF) |

## Part numbers

| Part number | CAGE | Supplier | Source |
| --- | --- | --- | --- |
| 11885-3-8/11885-3L8 | 59563 | REID PRODUCTS INC. DBA REID PRODUCTS INC | [flis](https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/) |
| 3M927-3-8 | 76301 | THE BOEING COMPANY DIV DEFENSE | [flis](https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/) |
| 3M927-3L8 | 007R1 | TWIST TITE MFG, INC DBA TWIST TITE MANUFACTURING INC | [flis](https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/) |
| 3M927-3L8 | 06710 | VALLEY-TODECO, INC. DBA ARCONIC FASTENING SYSTEMS | [flis](https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/) |
| 3M927-3L8 | 06725 | SPS TECHNOLOGIES, LLC DBA AIR INDUSTRIES COMPANY DIV AIR INDUSTRIES COMPANY | [flis](https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/) |
| 3M927-3L8 | 06950 | HOWMET GLOBAL FASTENING SYSTEMS INC | [flis](https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/) |
| 3M927-3L8 | 0K6Z0 | SATURN FASTENERS INC | [flis](https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/) |
| 3M927-3L8 | 0ZC92 | HEARTLAND PRECISION FASTENERS INC | [flis](https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/) |
| 3M927-3L8 | 1VSL7 | HOUSTON PRECISION FASTENERS I LP | [flis](https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/) |
| 3M927-3L8 | 27624 | SPS TECHNOLOGIES LLC DBA PB FASTENERS DIV PB FASTENERS | [flis](https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/) |
| 3M927-3L8 | 4WL75 | CAMCAR LLC DIV CAMCAR LLC | [flis](https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/) |
| 3M927-3L8 | 58998 | FASTENER INNOVATION TECHNOLOGY, INC. | [flis](https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/) |
| 3M927-3L8 | 59563 | REID PRODUCTS INC. DBA REID PRODUCTS INC | [flis](https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/) |
| 3M927-3L8 | 60516 | WEST COAST AEROSPACE, INC. | [flis](https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/) |
| 3M927-3L8 | 76301 | THE BOEING COMPANY DIV DEFENSE | [flis](https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/) |
| HT4069-3-8 | 06950 | HOWMET GLOBAL FASTENING SYSTEMS INC | [flis](https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/) |
| HT4069-3-8 | 17446 | HUCK INTERNATIONAL, INC | [flis](https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/) |
| HT4069-3-8 | 56878 | SPS TECHNOLOGIES, LLC DBA PB FASTENERS | [flis](https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/) |
| HT4069-3-8 | 73197 | HI-SHEAR CORPORATION | [flis](https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/) |
| HT4069-3-8 | 80539 | SPS TECHNOLOGIES, LLC DBA AEROSPACE FASTENERS GROUP DIV AEROSPACE - SANTA ANA | [flis](https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/) |
| HT4069-3-8 | 92215 | HOWMET GLOBAL FASTENING SYSTEMS INC DIV TORRANCE OPERATIONS | [flis](https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/) |
| HT4069-3-8 | 97928 | HUCK INTL INC | [flis](https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/) |
| HT4069-3-8 | C4293 | FAIRCHILD FASTENERS EUROPE - VSD GMBH | [flis](https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/) |
| HT4069-3-8A | 06950 | HOWMET GLOBAL FASTENING SYSTEMS INC | [flis](https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/) |
| HT4069-3-8A | 1RC86 | HOWMET GLOBAL FASTENING SYSTEMS INC DIV CITY OF INDUSTRY OPERATIONS | [flis](https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/) |
| HT4069-3-8A | 56878 | SPS TECHNOLOGIES, LLC DBA PB FASTENERS | [flis](https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/) |
| HT4069-3-8A | 73197 | HI-SHEAR CORPORATION | [flis](https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/) |
| HT4069-3-8A | 80539 | SPS TECHNOLOGIES, LLC DBA AEROSPACE FASTENERS GROUP DIV AEROSPACE - SANTA ANA | [flis](https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/) |
| HT4069-3-8A | L4528 | LISI AEROSPACE CANADA CORP DIV HI SHEAR HOLDINGS INC | [flis](https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/) |
| WC4069-3-8 | 60516 | WEST COAST AEROSPACE, INC. | [flis](https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/) |

## Sources

- DLA DIBBS RFQs for this NSN: https://www.dibbs.bsm.dla.mil/RFQ/RFQNsn.aspx?value=5305011708503&category=nsn
- DLA DIBBS awards for this NSN: https://www.dibbs.bsm.dla.mil/Awards/AwdRecs.aspx?category=awdnsn&TypeSrch=cq&Value=5305011708503
- AMSC record: https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/
- All data is public U.S. government data; every row above links to its source record where one exists.

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