PartsTable
Technical Data Sheet
1ARM8 ✓ Verified by PartsTable
· FAN MODULE
WHAT YOU NEED TO KNOW
Hot-plug fans can be replaced without shutdown Dual-rotor = higher CFM for high-power configs (GPU, dense storage)
AIRFLOW DIRECTION IS CRITICAL — reversed fan = thermal shutdown
PRODUCT OVERVIEW

HEAT SINK,ELECTRICAL-ELECTRONIC. Key specifications include material: STEEL OVERALL, overall_length: 20.750 INCHES NOMINAL IN, drive_end_shape: SQUARE SINGLE END EXTERNAL, furnished_items: CASE, special_features: RATCHET HEAD; PLAIN STEEL HANDLE; DUAL SCALE; 0.14 MKG GRADUATIONS, style_designator: MICROMETER END DRIVE. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5120-01-400-0241, indicating validated use in U.S.

government and defense logistics supply chains. Available through authorized enterprise resellers and TPM (Third Party Maintenance) channels. Verify compatibility with your specific system configuration before ordering.

WHERE IT FITS
1ARM8
NSN: 5120-01-400-0241
FSC: 5120
CAGE: 25795 — W.W. GRAINGER, INC. DIV GOVERNMENT SALES DIVISION (USA)
SPECIFICATIONS
materialSTEEL OVERALL
overall_length20.750 INCHES NOMINAL IN
drive_end_shapeSQUARE SINGLE END EXTERNAL
furnished_itemsCASE
special_featuresRATCHET HEAD; PLAIN STEEL HANDLE; DUAL SCALE; 0.14 MKG GRADUATIONS
style_designatorMICROMETER END DRIVE
surface_treatmentCHROMIUM OVERALL
drive_surface_size0.500 INCHES NOMINAL SINGLE END IN
torque_signal_methodAUDIBLE
torque_scale_graduation1.00 FOOT-POUNDS FT
nondefinitive_spec/std_data1 TYPE AND 2 CLASS
specification/standard_data0U583-SAE AS28431 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD
NSN5120-01-400-0241
COMPONENT DIAGRAM
HANDLE 60mm 60mm HOT-PLUG COOL IN HOT OUT DUAL ROTOR HOT-SWAP FAN MODULE | 60mm Dual Rotor | FRONT-TO-BACK Hot-plug | Redundant | TITLE FAN MODULE PN 1ARM8 MFR OEM HEAT SINK,ELECTRICAL-ELECTRONIC
KEY FEATURES
FURNISHED ITEMS: CASE
NONDEFINITIVE SPEC/STD DATA: 1 TYPE AND 2 CLASS
STYLE DESIGNATOR: MICROMETER END DRIVE
DRIVE END SHAPE: SQUARE SINGLE END EXTERNAL
MATERIAL: STEEL OVERALL
SPECIFICATION/STANDARD DATA: 0U583-SAE AS28431 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD
SURFACE TREATMENT: CHROMIUM OVERALL
TECHNICAL CHARACTERISTICS (FLIS)
OVERALL LENGTH20.750 INCHES NOMINAL IN
FURNISHED ITEMSCASE
NONDEFINITIVE SPEC/STD DATA1 TYPE AND 2 CLASS
STYLE DESIGNATORMICROMETER END DRIVE
DRIVE END SHAPESQUARE SINGLE END EXTERNAL
MATERIALSTEEL OVERALL
SPECIFICATION/STANDARD DATA0U583-SAE AS28431 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD
SURFACE TREATMENTCHROMIUM OVERALL
TORQUE SCALE GRADUATION1.00 FOOT-POUNDS FT
TORQUE CAPACITY30.0 FOOT-POUNDS MINIMUM AND 150.0 FOOT-POUNDS MAXIMUM AND 4.8 METER-KILOGRAMS MINIMUM AND 21.4 METER-KILOGRAMS MAXIMUM FT
VERIFIED SUBSTITUTES & CROSS-REFERENCES 15
MIL-H-4081 TY2STASZFInterchangeable
interchangeable cross-reference
interchangeable
MIL-H-4081Interchangeable
interchangeable cross-reference
interchangeable
6016B1-2-100-1-4Interchangeable
interchangeable cross-reference
interchangeable
SC5999-0033-1Interchangeable
interchangeable cross-reference
interchangeable
6016BInterchangeable
interchangeable cross-reference
interchangeable
1205-0289Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 1ARM8?
1ARM8 is a HEAT SINK,ELECTRICAL-ELECTRONIC.
What parts can replace 1ARM8?
There are 15 known substitutes for 1ARM8: MIL-H-4081 TY2STASZF, MIL-H-4081, 6016B1-2-100-1-4 and 12 more. Substitute compatibility should be verified for your specific system.
Is 1ARM8 still available?
1ARM8 is currently cancelled.
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