PartsTable
Technical Data Sheet
AN28 ✓ 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,ROUND is a the manufacturer industrial component. Key specifications include material: STEEL COMP 1005 OVERALL, nut_style: ROUND, nut_diameter: 7.0938 INCHES NOMINAL IN, nut_thickness: 0.923 INCHES MINIMUM AND 0.948 INCHES MAXIMUM IN, thread_series: UNS, hardness_rating: 66.0 ROCKWELL B MINIMUM AND 92.0 ROCKWELL B MAXIMUM. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-00-185-6338, 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
AN28
NSN: 5310-00-185-6338
FSC: 5310
CAGE: 79500 — WESTINGHOUSE ELECTRIC CORP (USA)
SPECIFICATIONS
materialSTEEL COMP 1005 OVERALL
nut_styleROUND
nut_diameter7.0938 INCHES NOMINAL IN
nut_thickness0.923 INCHES MINIMUM AND 0.948 INCHES MAXIMUM IN
thread_seriesUNS
hardness_rating66.0 ROCKWELL B MINIMUM AND 92.0 ROCKWELL B MAXIMUM
thread_directionRIGHT-HAND
drive_point_depth0.250 INCHES NOMINAL IN
drive_point_width0.610 INCHES MINIMUM AND 0.635 INCHES MAXIMUM IN
nominal_thread_size5.497 INCHES IN
drive_point_quantity4
thread_pitch_diameters+5.4429 TO 5.4512 INCHES IN
NSN5310-00-185-6338
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: AN28 · 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
NUT THICKNESS: 0.923 INCHES MINIMUM AND 0.948 INCHES MAXIMUM IN
NOMINAL THREAD SIZE: 5.497 INCHES IN
THREAD SERIES: UNS
HARDNESS RATING: 66.0 ROCKWELL B MINIMUM AND 92.0 ROCKWELL B MAXIMUM
THREAD QUANTITY PER INCH: 12
NUT STYLE: ROUND
THREAD PITCH DIAMETERS: +5.4429 TO 5.4512 INCHES IN
DRIVE POINT DEPTH: 0.250 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS (FLIS)
NUT THICKNESS0.923 INCHES MINIMUM AND 0.948 INCHES MAXIMUM IN
NOMINAL THREAD SIZE5.497 INCHES IN
THREAD SERIESUNS
HARDNESS RATING66.0 ROCKWELL B MINIMUM AND 92.0 ROCKWELL B MAXIMUM
THREAD QUANTITY PER INCH12
NUT STYLEROUND
THREAD PITCH DIAMETERS+5.4429 TO 5.4512 INCHES IN
DRIVE POINT DEPTH0.250 INCHES NOMINAL IN
THREAD DIRECTIONRIGHT-HAND
MATERIALSTEEL COMP 1005 OVERALL
VERIFIED SUBSTITUTES & CROSS-REFERENCES 13
RC20GF273JInterchangeable
interchangeable cross-reference
interchangeable
109074Interchangeable
interchangeable cross-reference
interchangeable
263-818-200Interchangeable
interchangeable cross-reference
interchangeable
AS954Interchangeable
interchangeable cross-reference
interchangeable
B107.9 TY3CL1Interchangeable
interchangeable cross-reference
interchangeable
BIPHASE NUTInterchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is AN28?
AN28 is a NUT,PLAIN,ROUND.
What parts can replace AN28?
There are 13 known substitutes for AN28: RC20GF273J, 109074, 263-818-200 and 10 more. Substitute compatibility should be verified for your specific system.
What is the NSN for AN28?
AN28 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-00-185-6338. This indicates validated use in U.S. government and defense supply chains.
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