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Technical Data Sheet
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X-73 ✓ Verified by PartsTable
— · NUT WASHER
WHAT YOU NEED TO KNOW
Match nut grade to bolt grade for full strength Lock nuts prevent loosening under vibration
Don't mix grades — weakens the joint
PRODUCT OVERVIEW

The ARM,CENTER STEERING is a the manufacturer industrial component. Key specifications include material: COPPER ALLOY OVERALL, hole_diameter: 0.101 INCHES MINIMUM AND 0.111 INCHES MAXIMUM IN, outside_diameter: 0.163 INCHES MINIMUM AND 0.173 INCHES MAXIMUM IN, special_features: 4.0 INCH LONG, TRIM TO SUIT IN, style_designator: SPLIT HELICAL-RIGHT HAND, surface_treatment: CADMIUM OVERALL. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-00-032-1973, 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
X-73
NSN: 5310-00-032-1973
FSC: 5310
CAGE: 35918 — HORIZON AEROSPACE LLC DBA MAGNETICS DIVISION (USA)
SPECIFICATIONS
materialCOPPER ALLOY OVERALL
hole_diameter0.101 INCHES MINIMUM AND 0.111 INCHES MAXIMUM IN
outside_diameter0.163 INCHES MINIMUM AND 0.173 INCHES MAXIMUM IN
special_features4.0 INCH LONG, TRIM TO SUIT IN
style_designatorSPLIT HELICAL-RIGHT HAND
surface_treatmentCADMIUM OVERALL
material_thickness0.026 INCHES MINIMUM AND 0.036 INCHES MAXIMUM IN
end_item_identificationUNITED @MFG SERIES 2A2
material_document_and_classificationAMS 4510 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
general_characteristics_item_descriptionLENGTH CENTERLINE OF AXLE MTG HOLE TO CENTERLINE OF DRAWBAR HINGE PIN HOLES,19-1/2 IN.; FURNISHED WITH LATCH ASSEMBLY IN
part_name_assigned_by_controlling_agencySEAL
surface_treatment_document_and_classificationQQ-P-416,TY 2,CL 2 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
NSN5310-00-032-1973
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: X-73 · OEM ⚠ VERIFY BEFORE ORDERING Grade matters for torque spec — don't mix grades. A Grade 5 nut on a Grade 8 bolt weakens the joint. Lock nuts, wing nuts, and castle nuts are NOT interchangeable with standard hex ✓ BROKER TIP Match nut to bolt thread class and material. Stainless bolt + zinc nut = galvanic corrosion. Always verify finish matches (plain, zinc, hot-dip galvanized) PARTSTABLE TECHNICAL DRAWING — NOT TO SCALE
KEY FEATURES
•
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: QQ-P-416,TY 2,CL 2 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
•
MATERIAL: COPPER ALLOY OVERALL
•
HOLE DIAMETER: 0.101 INCHES MINIMUM AND 0.111 INCHES MAXIMUM IN
•
STYLE DESIGNATOR: SPLIT HELICAL-RIGHT HAND
•
SURFACE TREATMENT: CADMIUM OVERALL
•
MATERIAL THICKNESS: 0.026 INCHES MINIMUM AND 0.036 INCHES MAXIMUM IN
•
OUTSIDE DIAMETER: 0.163 INCHES MINIMUM AND 0.173 INCHES MAXIMUM IN
•
MATERIAL DOCUMENT AND CLASSIFICATION: AMS 4510 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
TECHNICAL CHARACTERISTICS (FLIS)
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONQQ-P-416,TY 2,CL 2 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
MATERIALCOPPER ALLOY OVERALL
HOLE DIAMETER0.101 INCHES MINIMUM AND 0.111 INCHES MAXIMUM IN
STYLE DESIGNATORSPLIT HELICAL-RIGHT HAND
SURFACE TREATMENTCADMIUM OVERALL
MATERIAL THICKNESS0.026 INCHES MINIMUM AND 0.036 INCHES MAXIMUM IN
OUTSIDE DIAMETER0.163 INCHES MINIMUM AND 0.173 INCHES MAXIMUM IN
MATERIAL DOCUMENT AND CLASSIFICATIONAMS 4510 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
VERIFIED SUBSTITUTES & CROSS-REFERENCES 8
PR-410-11Interchangeable
interchangeable cross-reference
interchangeable
W232-59Interchangeable
interchangeable cross-reference
interchangeable
X-73Interchangeable
interchangeable cross-reference
interchangeable
9-508Interchangeable
interchangeable cross-reference
interchangeable
9-X-4Interchangeable
interchangeable cross-reference
interchangeable
KAL-01C PG 8.1 ITEM 8Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is X-73?
X-73 is a ARM,CENTER STEERING.
What parts can replace X-73?
There are 8 known substitutes for X-73: PR-410-11, W232-59, X-73 and 5 more. Substitute compatibility should be verified for your specific system.
Is X-73 still available?
X-73 is currently cancelled.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
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Last verified: July 2026