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Technical Data Sheet
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901-173 — Technical Data Sheet

✓ Verified by PartsTable
— · BOLT SCREW
WHAT YOU NEED TO KNOW
Grade/class stamped on head determines strength Metric and imperial threads look similar — measure pitch
Verify thread pitch — metric != imperial
PRODUCT OVERVIEW

CONNECTOR,RECEPTACLE,ELECTRICAL. Key specifications include head_style: ROUND, head_height: 0.123 INCHES MINIMUM AND 0.137 INCHES MAXIMUM IN, thread_class: 2A A, head_diameter: 0.334 INCHES MINIMUM AND 0.359 INCHES MAXIMUM IN, thread_length: 0.625 INCHES MINIMUM IN, screw_material: STEEL. This part is cataloged in the Federal Logistics Information System under NSN 5305-00-290-2574, 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
901-173
NSN: 5305-00-290-2574
FSC: 5305
CAGE: 92392 — ALLIS-CHALMERS CORP (USA)
SPECIFICATIONS
head_styleROUND
head_height0.123 INCHES MINIMUM AND 0.137 INCHES MAXIMUM IN
thread_class2A A
head_diameter0.334 INCHES MINIMUM AND 0.359 INCHES MAXIMUM IN
thread_length0.625 INCHES MINIMUM IN
screw_materialSTEEL
fastener_length0.625 INCHES NOMINAL IN
thread_directionRIGHT-HAND
fsc_application_dataRADAR ANTENNA SUPPORT SET AND RADOMES,EXCEPT SPECIALLY DESIGNED
internal_drive_styleSLOT
nominal_thread_diameter0.190 INCHES IN
minimum_tensile_strength60000 POUNDS PER SQUARE INCH LBS
NSN5305-00-290-2574
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: 901-173 · OEM ⚠ VERIFY BEFORE ORDERING Verify thread pitch before ordering — metric (M8×1.25) ≠ imperial (5/16-18). Wrong thread = wrong part. Grade/class stamped on bolt head determines tensile strength ✓ BROKER TIP Grade/class stamped on head determines tensile strength. Grade 8 > Grade 5 > Grade 2. Always confirm head marking matches specification requirement PARTSTABLE TECHNICAL DRAWING — NOT TO SCALE
KEY FEATURES
•
MINIMUM TENSILE STRENGTH: 60000 POUNDS PER SQUARE INCH LBS
•
THREAD DIRECTION: RIGHT-HAND
•
SCREW MATERIAL: STEEL
•
SCREW MATERIAL DOCUMENT AND CLASSIFICATION: QQ-S-634 FED SPEC SINGLE MATERIAL RESPONSE OR QQ-S-637 FED SPEC SINGLE MATERIAL RESPONSE OR 66 FED STD SINGLE MATERIAL RESPONSE
•
THREAD SERIES DESIGNATOR: UNIFIED NATIONAL COARSE (UNC)
•
NONDEFINITIVE SPEC/STD DATA: 1 TYPE AND 1S STYLE
•
THREAD LENGTH: 0.625 INCHES MINIMUM IN
•
FASTENER LENGTH: 0.625 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS
MINIMUM TENSILE STRENGTH60000 POUNDS PER SQUARE INCH LBS
THREAD DIRECTIONRIGHT-HAND
SCREW MATERIALSTEEL
SCREW MATERIAL DOCUMENT AND CLASSIFICATIONQQ-S-634 FED SPEC SINGLE MATERIAL RESPONSE OR QQ-S-637 FED SPEC SINGLE MATERIAL RESPONSE OR 66 FED STD SINGLE MATERIAL RESPONSE
THREAD SERIES DESIGNATORUNIFIED NATIONAL COARSE (UNC)
NONDEFINITIVE SPEC/STD DATA1 TYPE AND 1S STYLE
THREAD LENGTH0.625 INCHES MINIMUM IN
FASTENER LENGTH0.625 INCHES NOMINAL IN
THREAD CLASS2A A
HEAD DIAMETER0.334 INCHES MINIMUM AND 0.359 INCHES MAXIMUM IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 16
80312InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
44090InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
0733A0003-1InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
11050-3InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
11050-1InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
94608-1InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLEDGOVERNMENT REGISTRY
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 901-173?
901-173 is a CONNECTOR,RECEPTACLE,ELECTRICAL.
What parts can replace 901-173?
There are 16 known substitutes for 901-173: 80312, 44090, 0733A0003-1 and 13 more. Substitute compatibility should be verified for your specific system.
Is 901-173 still available?
901-173 is currently cancelled.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: September 2026