AS9120B, ISO 9001:2015, and FAA AC 0056B Accredited
| Item Name | Screw Close Tolerance |
| Federal Supply Group (FSG) | Hardware and Abrasives |
| Federal Supply Class (FSC) | 5305 Screws |
| National Item Identification Number (NIIN) | 01-591-0047 (015910047) |
| NCB Code | USA (01) |
| Manufacturer | Linread Canada Ltd, Heartland Precision Fasteners In, Houston Precision Fastener L L C, Alcoa Global Fasteners Inc, Boeing Company The, West Coast Aerospace Inc, Camcar Llc, Lisi Aerospace Canada Corp, Reid Products Inc, Huck International Inc, Sps Technologies Inc, Hi Shear Corporation, Fastener Innovation Technology Inc, Valley Todeco Inc, Saturn Fasteners Inc |
| Part Number | Manufacturer | Item Name | RFQ |
|---|---|---|---|
| ST3M557-4-21 | linread canada ltd | screw close tolerance | RFQ |
| ST3M557-4-21 | heartland precision fasteners in | screw close tolerance | RFQ |
| ST3M557-4-21 | houston precision fastener l l c | screw close tolerance | RFQ |
| HT4027-4-21 | alcoa global fasteners inc | screw close tolerance | RFQ |
| ST3M557-4-21 | boeing company the | screw close tolerance | RFQ |
| WC4027-4-21 | west coast aerospace inc | screw close tolerance | RFQ |
| ST3M668-4-21 | camcar llc | screw close tolerance | RFQ |
| HT4027-4-21 | lisi aerospace canada corp | screw close tolerance | RFQ |
| 11923-4-21 | reid products inc | screw close tolerance | RFQ |
| HT4027-4-21 | huck international inc | screw close tolerance | RFQ |
| HT4027-4-21 | sps technologies inc | screw close tolerance | RFQ |
| HT4027-4-21 | hi shear corporation | screw close tolerance | RFQ |
| ST3M557-4-21 | fastener innovation technology inc | screw close tolerance | RFQ |
| ST3M557-421 | valley todeco inc | screw close tolerance | RFQ |
| ST3M557-4-21 | saturn fasteners inc | screw close tolerance | RFQ |
| MRC | Criteria | Characteristic |
|---|---|---|
| AAJD | THREAD CLASS | 3A |
| AAJF | THREAD DIRECTION | RIGHT-HAND |
| AASA | THREAD LENGTH | 0.469 INCHES NOMINAL |
| AASB | FASTENER LENGTH | 1.767 INCHES MINIMUM AND 1.797 INCHES MAXIMUM |
| AASK | HEAD STYLE | FILLISTER COUNTERSUNK |
| AASL | HEAD DIAMETER | 0.390 INCHES MINIMUM AND 0.395 INCHES MAXIMUM |
| AASU | HEAD HEIGHT | 0.015 INCHES MAXIMUM |
| AAUR | GRIP DIAMETER | 0.249 NOMINAL MILS AND 0.250 NOMINAL CENTIMETERS |
| AAUY | POINT LENGTH | 0.045 INCHES NOMINAL |
| ABQJ | POINT STYLE | FLAT |
| ABQZ | INTERNAL DRIVE STYLE | HIGH-TORQUE |
| AHYM | NOMINAL THREAD DIAMETER | 0.250 INCHES |
| ANEE | GRIP LENGTH | 1.313 NOMINAL INCHES |
| CMLP | THREAD QUANTITY PER INCH | 28 |
| CRSQ | COUNTERSINK ANGLE | 99.0 DEGREES MINIMUM AND 101.0 DEGREES MAXIMUM |
| CWDK | POINT CHAMFER ANGLE | 45.0 MAXIMUM OF STANDARD RANGE SINGLE TREATMENT RESPONSE |
| CXCY | PART NAME ASSIGNED BY CONTROLLING AGENCY | SCREW, CLOSE TOLERANCE, 100 DEG COUNTERSUNK, REDUCED HEAD, HI-TORQUE, NON-MAGNETIC CRES (125 KSI FSU) |
| FEAT | SPECIAL FEATURES | HEAD HAS A 1.40 DEGREE RADIUS DOME |
| MATT | MATERIAL | NICKEL ALLOY 718 OVERALL |
| MDCL | MATERIAL DOCUMENT AND CLASSIFICATION | AMS 5662 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| SFTT | SURFACE TREATMENT | PASSIVATE OVERALL |
| STDC | SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | AMS 2700, METHOD 1 ASSN STD SINGLE TREATMENT RESPONSE OVERALL |
| THSD | THREAD SERIES DESIGNATOR | UNJF |
| Relevant Components for NSN - 5305-01-591-0047, 5305015910047 | ||||
| 5305-00-151-0390 (5305001510390) | 5305-00-162-0212 (5305001620212) | 5330-01-021-6193 (5330010216193) | 5306-01-667-2305 (5306016672305) | |
| 5305-00-702-7578 (5305007027578) | 5306-01-467-0619 (5306014670619) | 5340-14-507-0973 (5340145070973) | 5330-01-545-5049 (5330015455049) | |
| 5331-01-433-9967 (5331014339967) | 5330-01-176-0563 (5330011760563) | 5330-20-001-0516 (5330200010516) | 5305-00-550-9932 (5305005509932) | |
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