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Technical Data Sheet
PartsTable / COMPONENT / A-44-2057
A-44-2057 ✓ 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 WASHER,KEY is a the manufacturer industrial component. Key specifications include hole_diameter: 0.679 INCHES NOMINAL IN, outside_diameter: 0.938 INCHES NOMINAL IN, style_designator: KEY, material_thickness: 0.042 INCHES NOMINAL IN, criticality_code_justification: ZZZY, overall_distance_including_keys: 1.500 INCHES NOMINAL IN. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-01-167-8412, 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
A-44-2057
NSN: 5310-01-167-8412
FSC: 5310
CAGE: 23168 — HAMMEL DAHL INC (USA)
SPECIFICATIONS
hole_diameter0.679 INCHES NOMINAL IN
outside_diameter0.938 INCHES NOMINAL IN
style_designatorKEY
material_thickness0.042 INCHES NOMINAL IN
criticality_code_justificationZZZY
overall_distance_including_keys1.500 INCHES NOMINAL IN
reference_number_differentiating_characteristicsMATERIAL WILL BE IN ACCORDANCE WITH SHIPS PARTS CONTROL CENTER ACTIVITY HX QUALITY CONTROL,MANUFACTURING AND TESTING SPECIFICATIONS
NSN5310-01-167-8412
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: A-44-2057 · 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
•
OUTSIDE DIAMETER: 0.938 INCHES NOMINAL IN
•
CRITICALITY CODE JUSTIFICATION: ZZZY
•
OVERALL DISTANCE INCLUDING KEYS: 1.500 INCHES NOMINAL IN
•
HOLE DIAMETER: 0.679 INCHES NOMINAL IN
•
MATERIAL THICKNESS: 0.042 INCHES NOMINAL IN
•
REFERENCE NUMBER DIFFERENTIATING CHARACTERISTICS: MATERIAL WILL BE IN ACCORDANCE WITH SHIPS PARTS CONTROL CENTER ACTIVITY HX QUALITY CONTROL,MANUFACTURING AND TESTING SPECIFICATIONS
•
STYLE DESIGNATOR: KEY
TECHNICAL CHARACTERISTICS (FLIS)
OUTSIDE DIAMETER0.938 INCHES NOMINAL IN
CRITICALITY CODE JUSTIFICATIONZZZY
OVERALL DISTANCE INCLUDING KEYS1.500 INCHES NOMINAL IN
HOLE DIAMETER0.679 INCHES NOMINAL IN
MATERIAL THICKNESS0.042 INCHES NOMINAL IN
REFERENCE NUMBER DIFFERENTIATING CHARACTERISTICSMATERIAL WILL BE IN ACCORDANCE WITH SHIPS PARTS CONTROL CENTER ACTIVITY HX QUALITY CONTROL,MANUFACTURING AND TESTING SPECIFICATIONS
STYLE DESIGNATORKEY
VERIFIED SUBSTITUTES & CROSS-REFERENCES 7
D8708PC33Interchangeable
interchangeable cross-reference
interchangeable
D8960PC36Interchangeable
interchangeable cross-reference
interchangeable
D8527PC33Interchangeable
interchangeable cross-reference
interchangeable
W0-3Interchangeable
interchangeable cross-reference
interchangeable
LA656-2Interchangeable
interchangeable cross-reference
interchangeable
382176Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is A-44-2057?
A-44-2057 is a WASHER,KEY.
What parts can replace A-44-2057?
There are 7 known substitutes for A-44-2057: D8708PC33, D8960PC36, D8527PC33 and 4 more. Substitute compatibility should be verified for your specific system.
What is the NSN for A-44-2057?
A-44-2057 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-01-167-8412. This indicates validated use in U.S. government and defense supply chains.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026