Mfg Part Number: HR218-4-21D
Alternate P/N: HR218421D
NSN : 5305-01-323-4155
NIIN : 013234155
CAGE Code : L4528
Manufacturer: Lisi Aerospace
Item Name : Screw Close Toleran
FSC : FSC 5305 Screws
Here at Internet For Aviation, we have HR218-4-21D Screw Close Toleran from Lisi Aerospace, as well as a variety of other parts from reliable manufacturers. As the only independent distributor with a No China Sourcing policy, we go to great lengths to ensure that we source responsibly when it comes to certified standard items. If you’re in need of a specific HR218-4-21D to aid you in your aircraft repair capabilities, simply search by NSN part number, NSN or Cage Code on our parts directory. Submit an instant RFQ and a representative will get back to you in as little as 15 minutes.
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| NSN | FSC | NIIN | CLS | Hazmat | DEMIL | Cancelled NSN |
|---|---|---|---|---|---|---|
| 5305-01-323-4155 Item Description: Screw Close Toleran | 5305 | 013234155 | 0 | N | ||
| CIIC | HCC | ESD | PMIC | Criticality | ENAC | |
| U | A | |||||
| Part Number | ISC | RNVC | RNCC | HCC | MSDS | SADC |
| HR218-4-21D | 5 | 2 | 3 |
| MRC | Criteria | Characteristic |
|---|---|---|
| AAWB | SHANK UNTHREADED HOLE DIAMETER | 0.076 INCHES MINIMUM AND 0.086 INCHES MAXIMUM FIRST HOLE |
| AASA | THREAD LENGTH | 0.403 INCHES NOMINAL |
| AHYM | NOMINAL THREAD DIAMETER | 0.250 INCHES |
| AAJD | THREAD CLASS | 3A |
| AAUR | GRIP DIAMETER | 0.2485 INCHES MINIMUM AND 0.2495 INCHES MAXIMUM |
| CQBC | MINIMUM TENSILE STRENGTH | 160000 POUNDS PER SQUARE INCH |
| AASB | FASTENER LENGTH | 1.690 INCHES MINIMUM AND 1.720 INCHES MAXIMUM |
| CRSQ | COUNTERSINK ANGLE | 99.0 DEGREES MINIMUM AND 101.0 DEGREES MAXIMUM |
| CSYM | SURFACE FINISH | 32.0 MICROINCHES BEARING SURFACE OF HEAD 32.0 MICROINCHES GRIP 32.0 MICROINCHES THREADS |
| AAJF | THREAD DIRECTION | RIGHT-HAND |
| AASK | HEAD STYLE | FLAT COUNTERSUNK |
| AASL | HEAD DIAMETER | 0.3504 INCHES MINIMUM AND 0.3988 INCHES MAXIMUM |
| ABQZ | INTERNAL DRIVE STYLE | TORQUE-SET RIBBED |
| ANEE | GRIP LENGTH | 1.292 INCHES MINIMUM AND 1.312 INCHES MAXIMUM |
| CMLP | THREAD QUANTITY PER INCH | 28 |
| CQFM | HARDNESS RATING | 36.0 ROCKWELL C MINIMUM OVERALL AND 40.0 ROCKWELL C MAXIMUM OVERALL |
| CRZS | DISTANCE FROM HEAD LARGEST BEARING SURFACE TO SHANK HOLE CENTER | 1.564 INCHES MINIMUM FIRST HOLE AND 1.614 INCHES MAXIMUM FIRST HOLE |
| MATT | MATERIAL | STEEL COMP E4340 OVERALL OR STEEL COMP 4140 OVERALL OR STEEL COMP 8740 OVERALL OR STEEL COMP 8735 OVERALL OR STEEL COMP 6150 OVERALL |
| SFTT | SURFACE TREATMENT | CADMIUM OVERALL AND CHROMATE OVERALL |
| STDC | SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | QQ-P-416 TY 2,CL 2 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| THSD | THREAD SERIES DESIGNATOR | UNJF |
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