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HD85A ✓ 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 NUT,PLAIN,WING is a the manufacturer industrial component. Key specifications include material: COPPER ALLOY OVERALL, nut_style: WING, thread_class: 2B, body_diameter: 0.969 INCHES NOMINAL IN, thread_series: UNIFIED NATIONAL COARSE (UNC), overall_height: 1.219 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 5310-00-414-5226, 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
HD85A
NSN: 5310-00-414-5226
FSC: 5310
CAGE: 72922 — GROSS MECHANICAL LABORATORIES INC (USA)
SPECIFICATIONS
materialCOPPER ALLOY OVERALL
nut_styleWING
thread_class2B
body_diameter0.969 INCHES NOMINAL IN
thread_seriesUNIFIED NATIONAL COARSE (UNC)
overall_height1.219 INCHES NOMINAL IN
thread_directionRIGHT-HAND
wing_spread_width3.000 INCHES NOMINAL IN
fabrication_methodCAST
nominal_thread_size0.500 INCHES IN
thread_quantity_per_inch13
NSN5310-00-414-5226
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: HD85A · 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
•
THREAD DIRECTION: RIGHT-HAND
•
WING SPREAD WIDTH: 3.000 INCHES NOMINAL IN
•
THREAD SERIES: UNIFIED NATIONAL COARSE (UNC)
•
THREAD QUANTITY PER INCH: 13
•
NOMINAL THREAD SIZE: 0.500 INCHES IN
•
FABRICATION METHOD: CAST
•
NUT STYLE: WING
TECHNICAL CHARACTERISTICS (FLIS)
THREAD DIRECTIONRIGHT-HAND
WING SPREAD WIDTH3.000 INCHES NOMINAL IN
THREAD SERIESUNIFIED NATIONAL COARSE (UNC)
THREAD QUANTITY PER INCH13
NOMINAL THREAD SIZE0.500 INCHES IN
FABRICATION METHODCAST
NUT STYLEWING
OVERALL HEIGHT1.219 INCHES NOMINAL IN
THREAD CLASS2B
BODY DIAMETER0.969 INCHES NOMINAL IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 22
TIS75Interchangeable
interchangeable cross-reference
interchangeable
4807-5000-00Interchangeable
interchangeable cross-reference
interchangeable
55375Interchangeable
interchangeable cross-reference
interchangeable
94293Interchangeable
interchangeable cross-reference
interchangeable
5044-0750Interchangeable
interchangeable cross-reference
interchangeable
S-74Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is HD85A?
HD85A is a NUT,PLAIN,WING.
What parts can replace HD85A?
There are 22 known substitutes for HD85A: TIS75, 4807-5000-00, 55375 and 19 more. Substitute compatibility should be verified for your specific system.
What is the NSN for HD85A?
HD85A is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-00-414-5226. 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