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43042-00296-1 — NUT,SELF-LOCKING,EXTENDED WASHER

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

43042-00296-1: NUT,SELF-LOCKING,EXTENDED WASHER.

NUT,SELF-LOCKING,EXTENDED WASHER. Key specifications include material: STEEL COMP 41L40 AND STEEL COMP 41L50 OVERALL, nut_style: HEXAGON, thread_class: 3B, thread_series: UNF, overall_height: 0.500 INCHES NOMINAL IN, locking_feature: PREVAILING TORQUE ALL METAL DESIGN. This part is cataloged in the U.S.

Government catalog under NSN 5310-01-540-8098, 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
43042-00296-1
NSN: 5310-01-540-8098
FSC: 5310 — Nuts and Washers
CAGE: 02591 — NAVAL AIR WARFARE CTR AIRCRAFT DIV (USA)
SPECIFICATIONS
materialSTEEL COMP 41L40 AND STEEL COMP 41L50 OVERALL
nut_styleHEXAGON
thread_class3B
thread_seriesUNF
overall_height0.500 INCHES NOMINAL IN
locking_featurePREVAILING TORQUE ALL METAL DESIGN
thread_directionRIGHT-HAND
washer_thickness0.125 INCHES NOMINAL IN
width_across_flats1.300 INCHES MINIMUM AND 1.305 INCHES MAXIMUM IN
nominal_thread_size0.500 INCHES IN
washer_outside_diameter1.625 INCHES NOMINAL IN
thread_quantity_per_inch20
NSN5310-01-540-8098
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 43042-00296-1 · 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
•
WASHER OUTSIDE DIAMETER: 1.625 INCHES NOMINAL IN
•
WIDTH ACROSS FLATS: 1.300 INCHES MINIMUM AND 1.305 INCHES MAXIMUM IN
•
THREAD SERIES: UNF
•
WASHER THICKNESS: 0.125 INCHES NOMINAL IN
•
THREAD DIRECTION: RIGHT-HAND
•
NOMINAL THREAD SIZE: 0.500 INCHES IN
•
LOCKING FEATURE: PREVAILING TORQUE ALL METAL DESIGN
TECHNICAL CHARACTERISTICS
OVERALL HEIGHT0.500 INCHES NOMINAL IN
WASHER OUTSIDE DIAMETER1.625 INCHES NOMINAL IN
WIDTH ACROSS FLATS1.300 INCHES MINIMUM AND 1.305 INCHES MAXIMUM IN
THREAD SERIESUNF
WASHER THICKNESS0.125 INCHES NOMINAL IN
THREAD DIRECTIONRIGHT-HAND
NOMINAL THREAD SIZE0.500 INCHES IN
LOCKING FEATUREPREVAILING TORQUE ALL METAL DESIGN
NUT STYLEHEXAGON
THREAD CLASS3B
OTHER ITEMS IN FSC 5310 — Nuts and Washers
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
5310-00-000-0040 5310-00-000-0077 5310-00-000-0079 5310-00-000-1146 5310-00-000-3815 5310-00-000-4532 5310-00-000-4540
SUBSTITUTES & CROSS-REFERENCES

No substitute or cross-reference records for this part.

LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Normally procured from the manufacturer (OEM)No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 43042-00296-1?
43042-00296-1 is a NUT,SELF-LOCKING,EXTENDED WASHER.
What is the NSN for 43042-00296-1?
43042-00296-1 is cataloged in the U.S. Government catalog under NSN 5310-01-540-8098. 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.