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12Z335-28 — NUT,PLAIN,ROUND

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

12Z335-28: NUT,PLAIN,ROUND.

The NUT,PLAIN,ROUND is a the manufacturer industrial component. Key specifications include material: STEEL COMP 1005 OVERALL, nut_style: ROUND, nut_diameter: 5.4375 INCHES NOMINAL IN, nut_thickness: 0.750 INCHES NOMINAL IN, thread_series: UNS, hardness_rating: 66.0 ROCKWELL B MINIMUM AND 92.0 ROCKWELL B MAXIMUM. This part is cataloged in the U.S.

Government catalog under NSN 5310-00-185-6376, 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
12Z335-28
NSN: 5310-00-185-6376
FSC: 5310 — Nuts and Washers
CAGE: 10001 — NAVAIR AND NAVSEA MANAGED ORIGINAL DESIGN ACTIVITY DWG NOT MATERIAL/PARTS SUPPLIER (USA)
SPECIFICATIONS
materialSTEEL COMP 1005 OVERALL
nut_styleROUND
nut_diameter5.4375 INCHES NOMINAL IN
nut_thickness0.750 INCHES NOMINAL IN
thread_seriesUNS
hardness_rating66.0 ROCKWELL B MINIMUM AND 92.0 ROCKWELL B MAXIMUM
thread_directionRIGHT-HAND
drive_point_depth0.1875 INCHES NOMINAL IN
drive_point_width0.500 INCHES NOMINAL IN
nominal_thread_size4.122 INCHES IN
drive_point_quantity4
thread_pitch_diameters+4.0679 TO 4.0762 INCHES IN
NSN5310-00-185-6376
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 12Z335-28 · 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 SERIES: UNS
•
HARDNESS RATING: 66.0 ROCKWELL B MINIMUM AND 92.0 ROCKWELL B MAXIMUM
•
THREAD PITCH DIAMETERS: +4.0679 TO 4.0762 INCHES IN
•
DRIVE POINT WIDTH: 0.500 INCHES NOMINAL IN
•
THREAD DIRECTION: RIGHT-HAND
•
NOMINAL THREAD SIZE: 4.122 INCHES IN
•
NUT DIAMETER: 5.4375 INCHES NOMINAL IN
•
DRIVE POINT DEPTH: 0.1875 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS
THREAD SERIESUNS
HARDNESS RATING66.0 ROCKWELL B MINIMUM AND 92.0 ROCKWELL B MAXIMUM
THREAD PITCH DIAMETERS+4.0679 TO 4.0762 INCHES IN
DRIVE POINT WIDTH0.500 INCHES NOMINAL IN
THREAD DIRECTIONRIGHT-HAND
NOMINAL THREAD SIZE4.122 INCHES IN
NUT DIAMETER5.4375 INCHES NOMINAL IN
DRIVE POINT DEPTH0.1875 INCHES NOMINAL IN
NUT THICKNESS0.750 INCHES NOMINAL IN
DRIVE POINT QUANTITY4
SUBSTITUTES & CROSS-REFERENCES 3
AN21Reference document
Same NSN cross-reference
Reference document — Advisory reference — outside the item-of-supply concept
MS19068-211Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
127724Reference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Insurance item — stocked against contingency demandNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 12Z335-28?
12Z335-28 is a NUT,PLAIN,ROUND.
What parts can replace 12Z335-28?
There are 3 known substitutes for 12Z335-28: AN21, MS19068-211, 127724. Substitute compatibility should be verified for your specific system.
What is the NSN for 12Z335-28?
12Z335-28 is cataloged in the U.S. Government catalog under NSN 5310-00-185-6376. This indicates validated use in U.S. government and defense supply chains.
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✓ PartsTable — the parts reference. Every fact cited to its source.
PartsTable Design LLC · partstable.com
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.
PartsTable commercial catalog: edition Unified commercial catalog snapshot through 2026-09-28, edition date not on file, retrieved 2026-09-28.