| Item Name | Screw Cap Hexagon Head |
| Federal Supply Group (FSG) | Hardware and Abrasives |
| Federal Supply Class (FSC) | 5305 Screws |
| National Item Identification Number (NIIN) | 01-297-3107 (012973107) |
| NCB Code | USA (01) |
| Manufacturer | American National Standards, Military Specifications |
| Part Number | Manufacturer | Item Name | RFQ |
|---|---|---|---|
| 1 4 28UNF 2AX2 1 4 IN LG STL | american national standards | screw cap hexagon head | RFQ |
| MIL-S-1222 | military specifications | screw cap hexagon head | RFQ |
| MIL-DTL-1222 | military specifications | screw cap hexagon head | RFQ |
| MRC | Criteria | Characteristic |
|---|---|---|
| AAJD | THREAD CLASS | 2A |
| AAJF | THREAD DIRECTION | RIGHT-HAND |
| AASA | THREAD LENGTH | 0.750 INCHES MINIMUM |
| AASB | FASTENER LENGTH | 2.210 INCHES MINIMUM AND 2.250 INCHES MAXIMUM |
| AASK | HEAD STYLE | HEXAGON |
| AASU | HEAD HEIGHT | 0.150 INCHES MINIMUM AND 0.163 INCHES MAXIMUM |
| AATB | WIDTH BETWEEN FLATS | 0.428 INCHES MINIMUM AND 0.438 INCHES MAXIMUM |
| AHYM | NOMINAL THREAD DIAMETER | 0.250 INCHES |
| CBBL | FEATURES PROVIDED | FINISHED HEAD |
| CMLP | THREAD QUANTITY PER INCH | 28 |
| CQBC | MINIMUM TENSILE STRENGTH | 120000 POUNDS PER SQUARE INCH |
| CQFM | HARDNESS RATING | 23.0 ROCKWELL C MINIMUM AND 34.0 ROCKWELL C MAXIMUM OVERALL |
| CXCY | PART NAME ASSIGNED BY CONTROLLING AGENCY | SCREW,CAP,HEXAGON HEAD |
| MATT | MATERIAL | STEEL OVERALL |
| MDCL | MATERIAL DOCUMENT AND CLASSIFICATION | SAE J429 GR 5 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| SFTT | SURFACE TREATMENT | ZINC AND CHROMATE OVERALL |
| STDC | SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | ASTM B633 TY 2 ASSN STD SINGLE TREATMENT RESPONSE OVERALL |
| THSD | THREAD SERIES DESIGNATOR | UNF |
| ZZZT | NONDEFINITIVE SPEC/STD DATA | 1 TYPE AND 5 GRADE |
| Relevant Components for NSN - 5305-01-297-3107, 5305012973107 | ||||
| 5320-01-318-6843 (5320013186843) | 5340-01-557-4760 (5340015574760) | 5340-00-336-3776 (5340003363776) | 5340-01-560-8528 (5340015608528) | |
| 5330-01-684-2979 (5330016842979) | 5310-01-185-8686 (5310011858686) | 5360-00-394-4491 (5360003944491) | 5320-01-267-6376 (5320012676376) | |
| 5315-00-432-8021 (5315004328021) | 5315-01-271-9296 (5315012719296) | 5340-01-353-1927 (5340013531927) | 5320-01-413-1816 (5320014131816) | |
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