PartsTable
Technical Data Sheet
70Z1835-048 ✓ 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

NUT,SELF-LOCKING,EXTENDED WASHER. Key specifications include material: STEEL COMP 303 OR STEEL COMP 303SE OR STEEL COMP 303 PLUS X OVERALL, nut_style: DOUBLE HEXAGON, temp_rating: 800.0 FAHRENHEIT NOMINAL DEGF, thread_class: 3B, thread_series: UNF, overall_height: 0.314 INCHES MINIMUM AND 0.329 INCHES MAXIMUM 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 5310-00-472-8820, 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
70Z1835-048
NSN: 5310-00-472-8820
FSC: 5310
CAGE: 72962 — HARVARD INDUSTRIES INC (USA)
SPECIFICATIONS
materialSTEEL COMP 303 OR STEEL COMP 303SE OR STEEL COMP 303 PLUS X OVERALL
nut_styleDOUBLE HEXAGON
temp_rating800.0 FAHRENHEIT NOMINAL DEGF
thread_class3B
thread_seriesUNF
overall_height0.314 INCHES MINIMUM AND 0.329 INCHES MAXIMUM IN
locking_featurePREVAILING TORQUE ALL METAL DESIGN
thread_directionRIGHT-HAND
washer_thickness0.060 INCHES MINIMUM AND 0.080 INCHES MAXIMUM IN
precious_materialSILVER
surface_treatmentSILVER OVERALL
width_across_flats0.369 INCHES MINIMUM AND 0.376 INCHES MAXIMUM IN
NSN5310-00-472-8820
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 70Z1835-048 · 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 QUANTITY PER INCH: 28
NOMINAL THREAD SIZE: 0.250 INCHES IN
LOCKING FEATURE: PREVAILING TORQUE ALL METAL DESIGN
THREAD SERIES: UNF
WIDTH ACROSS FLATS: 0.367 INCHES MINIMUM AND 0.376 INCHES MAXIMUM IN
MATERIAL: STEEL COMP 303 OVERALL
SURFACE TREATMENT: SILVER OVERALL
TECHNICAL CHARACTERISTICS (FLIS)
THREAD QUANTITY PER INCH28
NOMINAL THREAD SIZE0.250 INCHES IN
SPECIAL FEATURESBEARING SURFACE SHALL BE SQUARE TO P.D. OF THREAD TO WITHIN 0.001 T.I.R.
LOCKING FEATUREPREVAILING TORQUE ALL METAL DESIGN
THREAD SERIESUNF
WIDTH ACROSS FLATS0.367 INCHES MINIMUM AND 0.376 INCHES MAXIMUM IN
MATERIALSTEEL COMP 303 OVERALL
SURFACE TREATMENTSILVER OVERALL
OVERALL HEIGHT0.314 INCHES MINIMUM AND 0.329 INCHES MAXIMUM IN
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONAMS 2410 ASSN STD SINGLE TREATMENT RESPONSE OVERALL
VERIFIED SUBSTITUTES & CROSS-REFERENCES 13
21349Interchangeable
interchangeable cross-reference
interchangeable
21350EHInterchangeable
interchangeable cross-reference
interchangeable
1297Interchangeable
interchangeable cross-reference
interchangeable
R418P1AInterchangeable
interchangeable cross-reference
interchangeable
SL4906-428Interchangeable
interchangeable cross-reference
interchangeable
70Z1835-048Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 70Z1835-048?
70Z1835-048 is a NUT,SELF-LOCKING,EXTENDED WASHER.
What parts can replace 70Z1835-048?
There are 13 known substitutes for 70Z1835-048: 21349, 21350EH, 1297 and 10 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 70Z1835-048?
70Z1835-048 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-00-472-8820. This indicates validated use in U.S. government and defense supply chains.
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