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BD1304 ✓ 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,HEXAGON is a the manufacturer industrial component. Key specifications include material: STEEL OVERALL, nut_style: HEXAGON, nut_height: 0.609 INCHES NOMINAL IN, thread_class: 2B, thread_series: UNF, thread_direction: RIGHT-HAND. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-00-718-7518, 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
BD1304
NSN: 5310-00-718-7518
FSC: 5310
CAGE: 74066 — HACKNEY BROS BODY CO (USA)
SPECIFICATIONS
materialSTEEL OVERALL
nut_styleHEXAGON
nut_height0.609 INCHES NOMINAL IN
thread_class2B
thread_seriesUNF
thread_directionRIGHT-HAND
width_across_flats1.063 INCHES NOMINAL IN
nominal_thread_size0.625 INCHES IN
bearing_surface_typeFLAT
thread_quantity_per_inch18
NSN5310-00-718-7518
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: BD1304 · 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
•
MATERIAL: STEEL OVERALL
•
NOMINAL THREAD SIZE: 0.625 INCHES IN
•
THREAD SERIES: UNF
•
THREAD QUANTITY PER INCH: 18
•
BEARING SURFACE TYPE: FLAT
•
THREAD DIRECTION: RIGHT-HAND
•
WIDTH ACROSS FLATS: 1.063 INCHES NOMINAL IN
•
THREAD CLASS: 2B
TECHNICAL CHARACTERISTICS (FLIS)
MATERIALSTEEL OVERALL
NOMINAL THREAD SIZE0.625 INCHES IN
THREAD SERIESUNF
THREAD QUANTITY PER INCH18
BEARING SURFACE TYPEFLAT
THREAD DIRECTIONRIGHT-HAND
WIDTH ACROSS FLATS1.063 INCHES NOMINAL IN
THREAD CLASS2B
NUT STYLEHEXAGON
NUT HEIGHT0.609 INCHES NOMINAL IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 16
38Interchangeable
interchangeable cross-reference
interchangeable
538Interchangeable
interchangeable cross-reference
interchangeable
GGG-S-66Interchangeable
interchangeable cross-reference
interchangeable
89G429Interchangeable
interchangeable cross-reference
interchangeable
L220FInterchangeable
interchangeable cross-reference
interchangeable
234-986Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is BD1304?
BD1304 is a NUT,PLAIN,HEXAGON.
What parts can replace BD1304?
There are 16 known substitutes for BD1304: 38, 538, GGG-S-66 and 13 more. Substitute compatibility should be verified for your specific system.
What is the NSN for BD1304?
BD1304 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-00-718-7518. 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