AS9120B, ISO 9001:2015, and FAA AC 0056B Accredited
Alcoa Fastening Systems Ltd
HT4009-4-12
Screw Shoulder
Specifications
| Part Number | HT4009-4-12 |
| Description | Screw Shoulder |
| Manufacturer | Alcoa Fastening Systems Ltd |
| NSN | 5305-01-051-0108(5305010510108) |
| Item Name | Screw Shoulder |
| CAGE Code | 45JH3 |
| NIIN | 01-051-0108(010510108) |
| FSC Code | 5305 Screws |
| FSG Code | 53 Hardware and Abrasives |
| NCB Code | 01 |
| Country | USA |
Description
Screw Shoulder
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NSN Information for Part Number HT4009-4-12 with NSN 5305-01-051-0108, 5305010510108
Characteristics Data of NSN 5305-01-051-0108, 5305010510108
| MRC | Criteria | Characteristic |
|---|---|---|
| AAJD | THREAD CLASS | 3A |
| AAJF | THREAD DIRECTION | RIGHT-HAND |
| AASA | THREAD LENGTH | 0.372 INCHES MINIMUM AND 0.422 INCHES MAXIMUM |
| AASB | FASTENER LENGTH | 1.507 INCHES MINIMUM AND 1.537 INCHES MAXIMUM |
| AASK | HEAD STYLE | FLAT COUNTERSUNK |
| AASL | HEAD DIAMETER | 0.456 INCHES MINIMUM AND 0.508 INCHES MAXIMUM |
| AATN | SHOULDER DIAMETER | 0.2802 INCHES MINIMUM FIRST SHOULDER AND 0.2807 INCHES MAXIMUM FIRST SHOULDER |
| AATX | SHOULDER LENGTH | 0.645 INCHES MINIMUM FIRST SHOULDER AND 0.665 INCHES MAXIMUM FIRST SHOULDER |
| ABQZ | INTERNAL DRIVE STYLE | HIGH-TORQUE |
| AHYM | NOMINAL THREAD DIAMETER | 0.250 INCHES |
| CMLP | THREAD QUANTITY PER INCH | 28 |
| CRSQ | COUNTERSINK ANGLE | 99.0 DEGREES MINIMUM AND 101.0 DEGREES MAXIMUM |
| CWYB | SHOULDER SHAPE | ROUND FIRST SHOULDER |
| FEAT | SPECIAL FEATURES | SOCKET DRIVE RECESS IN THREAD END 0.0947 IN. MIN AND 0.0967 IN. MAX WIDTH ACROSS FLATS |
| MATT | MATERIAL | STEEL COMP XM-13 OVERALL |
| MDCL | MATERIAL DOCUMENT AND CLASSIFICATION | AMS5629 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| SFTT | SURFACE TREATMENT | PASSIVATE OVERALL |
| STDC | SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| THSD | THREAD SERIES DESIGNATOR | UNJF |
