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NAS1291C06M2 — NUT,SELF-LOCKING,EXTENDED WASHER

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

NAS1291C06M2: NUT,SELF-LOCKING,EXTENDED WASHER.

NUT,SELF-LOCKING,EXTENDED WASHER. Key specifications include material: STEEL CORROSION RESISTING OVERALL, nut_style: HEXAGON, temp_rating: 550.0 FAHRENHEIT NOMINAL DEGF, thread_class: 3B, thread_series: UNF, overall_height: 0.269 INCHES MINIMUM AND 0.282 INCHES MAXIMUM IN. This part is cataloged in the U.S.

Government catalog under NSN 5310-00-879-0669, 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
NAS1291C06M2
NSN: 5310-00-879-0669
FSC: 5310 — Nuts and Washers
CAGE: D9182 — ZF INDUSTRIEANTRIEBE WITTEN GMBH (DEU)
SPECIFICATIONS
materialSTEEL CORROSION RESISTING OVERALL
nut_styleHEXAGON
temp_rating550.0 FAHRENHEIT NOMINAL DEGF
thread_class3B
thread_seriesUNF
overall_height0.269 INCHES MINIMUM AND 0.282 INCHES MAXIMUM IN
locking_featurePREVAILING TORQUE ALL METAL DESIGN
thread_directionRIGHT-HAND
washer_thickness0.030 INCHES NOMINAL IN
surface_treatmentPASSIVATE OVERALL
width_across_flats0.430 INCHES MINIMUM AND 0.440 INCHES MAXIMUM IN
nominal_thread_size0.375 INCHES IN
NSN5310-00-879-0669
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: NAS1291C06M2 · 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: 0.620 INCHES NOMINAL IN
•
WIDTH ACROSS FLATS: 0.430 INCHES MINIMUM AND 0.440 INCHES MAXIMUM IN
•
THREAD SERIES: UNF
•
TEMP RATING: 550.0 FAHRENHEIT NOMINAL DEGF
•
WASHER THICKNESS: 0.030 INCHES NOMINAL IN
•
THREAD DIRECTION: RIGHT-HAND
•
NOMINAL THREAD SIZE: 0.375 INCHES IN
TECHNICAL CHARACTERISTICS
OVERALL HEIGHT0.269 INCHES MINIMUM AND 0.282 INCHES MAXIMUM IN
WASHER OUTSIDE DIAMETER0.620 INCHES NOMINAL IN
WIDTH ACROSS FLATS0.430 INCHES MINIMUM AND 0.440 INCHES MAXIMUM IN
THREAD SERIESUNF
TEMP RATING550.0 FAHRENHEIT NOMINAL DEGF
WASHER THICKNESS0.030 INCHES NOMINAL IN
THREAD DIRECTIONRIGHT-HAND
NOMINAL THREAD SIZE0.375 INCHES IN
LOCKING FEATUREPREVAILING TORQUE ALL METAL DESIGN
SURFACE TREATMENTPASSIVATE OVERALL
SUBSTITUTES & CROSS-REFERENCES 8
NAS1291C6MSame NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
457-5590Reference document
Same NSN cross-reference
Reference document — Informative reference only
950228--00Reference document
Same NSN cross-reference
Reference document — Secondary reference
FB1014M634Reference document
Same NSN cross-reference
Reference document — Design control — primary reference
RMLH3858-064Reference document
Same NSN cross-reference
Reference document — Secondary reference
AS8650JSame NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
LIFECYCLE
NSN statusCancelled· U.S. Government catalog
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is NAS1291C06M2?
NAS1291C06M2 is a NUT,SELF-LOCKING,EXTENDED WASHER.
What parts can replace NAS1291C06M2?
There are 8 known substitutes for NAS1291C06M2: NAS1291C6M, 457-5590, 950228--00 and 5 more. Substitute compatibility should be verified for your specific system.
What is the NSN for NAS1291C06M2?
NAS1291C06M2 is cataloged in the U.S. Government catalog under NSN 5310-00-879-0669. 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.