PartsTable
Technical Data Sheet
AN355-4 ✓ 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,CASTELLATED,HEXAGON is a the manufacturer industrial component. Key specifications include material: STEEL OVERALL, nut_style: CASTELLATED, HEXAGON, nut_height: 0.281 INCHES NOMINAL IN, thread_class: 3B, thread_series: UNF, hardness_rating: 68.0 ROCKWELL B MINIMUM AND 32.0 ROCKWELL C 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 5310-00-176-8196, 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
AN355-4
NSN: 5310-00-176-8196
FSC: 5310
CAGE: 88044 — AERONAUTICAL STANDARDS GROUP DEPT OF NAVY AND AIR FORCE (USA)
SPECIFICATIONS
materialSTEEL OVERALL
nut_styleCASTELLATED, HEXAGON
nut_height0.281 INCHES NOMINAL IN
thread_class3B
thread_seriesUNF
hardness_rating68.0 ROCKWELL B MINIMUM AND 32.0 ROCKWELL C MAXIMUM
thread_directionRIGHT-HAND
countersink_angle110.0 DEGREES NOMINAL NUT
surface_treatmentCADMIUM OVERALL
width_across_flats0.428 INCHES MINIMUM AND 0.440 INCHES MAXIMUM IN
nominal_thread_size0.250 INCHES IN
bearing_surface_typeWASHER FACED
NSN5310-00-176-8196
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: AN355-4 · 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
NOMINAL THREAD SIZE: 0.250 INCHES IN
NUT STYLE: CASTELLATED, HEXAGON
THREAD QUANTITY PER INCH: 28
BEARING SURFACE TYPE: WASHER FACED
THREAD SERIES: UNF
MATERIAL: STEEL OVERALL
THREAD CLASS: 3B
COUNTERSINK ANGLE: 110.0 DEGREES NOMINAL NUT
TECHNICAL CHARACTERISTICS (FLIS)
NOMINAL THREAD SIZE0.250 INCHES IN
NUT STYLECASTELLATED, HEXAGON
THREAD QUANTITY PER INCH28
BEARING SURFACE TYPEWASHER FACED
THREAD SERIESUNF
MATERIALSTEEL OVERALL
THREAD CLASS3B
COUNTERSINK ANGLE110.0 DEGREES NOMINAL NUT
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONQQ-P-416,TY 2,CL 3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
NUT HEIGHT0.281 INCHES NOMINAL IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 6
39750Interchangeable
interchangeable cross-reference
interchangeable
XM-36460-45-1000-O-LInterchangeable
interchangeable cross-reference
interchangeable
3648C004Interchangeable
interchangeable cross-reference
interchangeable
89406994Interchangeable
interchangeable cross-reference
interchangeable
41-954Interchangeable
interchangeable cross-reference
interchangeable
206-3Interchangeable
Same NIIN cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
Ready to buy AN355-4?
Compare prices from verified sellers on eBay
Buy on eBay →
As an eBay Partner, PartsTable may earn a commission. Your price is not affected.
FREQUENTLY ASKED QUESTIONS
What is AN355-4?
AN355-4 is a NUT,PLAIN,CASTELLATED,HEXAGON.
What parts can replace AN355-4?
There are 6 known substitutes for AN355-4: 39750, XM-36460-45-1000-O-L, 3648C004 and 3 more. Substitute compatibility should be verified for your specific system.
What is the NSN for AN355-4?
AN355-4 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-00-176-8196. This indicates validated use in U.S. government and defense supply chains.
Community Feedback
Comments (0)
No comments yet. Be the first to share what you know.
Leave a Comment
Comments are reviewed before appearing. You will receive an email to verify before your comment appears.

Request a Quote — AN355-4