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10-571913-20G — NUT,SELF-LOCKING,HEXAGON

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

10-571913-20G: NUT,SELF-LOCKING,HEXAGON.

The NUT,SELF-LOCKING,HEXAGON is a the manufacturer industrial component. Key specifications include material: ALUMINUM ALLOY OVERALL, nut_style: HEXAGON, nut_height: 0.118 INCHES MINIMUM AND 0.122 INCHES MAXIMUM IN, thread_class: 2B, thread_series: UNEF, locking_feature: FREE-RUNNING ALL METAL DESIGN. This part is cataloged in the U.S.

Government catalog under NSN 5310-01-266-3957, 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
10-571913-20G
NSN: 5310-01-266-3957
FSC: 5310 — Nuts and Washers
CAGE: 77820 — AMPHENOL CORP DIV AMPHENOL AEROSPACE OPERATIONS (USA)
SPECIFICATIONS
materialALUMINUM ALLOY OVERALL
nut_styleHEXAGON
nut_height0.118 INCHES MINIMUM AND 0.122 INCHES MAXIMUM IN
thread_class2B
thread_seriesUNEF
locking_featureFREE-RUNNING ALL METAL DESIGN
thread_directionRIGHT-HAND
surface_treatmentNICKEL OVERALL
width_across_flats1.557 INCHES MINIMUM AND 1.567 INCHES MAXIMUM IN
nominal_thread_size1.375 INCHES IN
bearing_surface_typeFLAT
drilled_hole_diameter0.060 INCHES MINIMUM AND 0.066 INCHES MAXIMUM IN
NSN5310-01-266-3957
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 10-571913-20G · 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
•
WIDTH ACROSS FLATS: 1.557 INCHES MINIMUM AND 1.567 INCHES MAXIMUM IN
•
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: 9-6594,CAGE 77820 MFR REF SINGLE TREATMENT RESPONSE OVERALL
•
THREAD SERIES: UNEF
•
HOLE CONFIGURATION STYLE: CONFIGURATION B
•
MATERIAL DOCUMENT AND CLASSIFICATION: AMS4118 ASSN STD SINGLE MATERIAL RESPONSE OR AMS4119 ASSN STD SINGLE MATERIAL RESPONSE OR AMS4120 ASSN STD SINGLE MATERIAL RESPONSE OR AMS4150 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
•
THREAD DIRECTION: RIGHT-HAND
•
NOMINAL THREAD SIZE: 1.375 INCHES IN
•
LOCKING FEATURE: FREE-RUNNING ALL METAL DESIGN
TECHNICAL CHARACTERISTICS
WIDTH ACROSS FLATS1.557 INCHES MINIMUM AND 1.567 INCHES MAXIMUM IN
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION9-6594,CAGE 77820 MFR REF SINGLE TREATMENT RESPONSE OVERALL
THREAD SERIESUNEF
HOLE CONFIGURATION STYLECONFIGURATION B
MATERIAL DOCUMENT AND CLASSIFICATIONAMS4118 ASSN STD SINGLE MATERIAL RESPONSE OR AMS4119 ASSN STD SINGLE MATERIAL RESPONSE OR AMS4120 ASSN STD SINGLE MATERIAL RESPONSE OR AMS4150 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
THREAD DIRECTIONRIGHT-HAND
NOMINAL THREAD SIZE1.375 INCHES IN
LOCKING FEATUREFREE-RUNNING ALL METAL DESIGN
NUT HEIGHT0.118 INCHES MINIMUM AND 0.122 INCHES MAXIMUM IN
DRILLED HOLE DIAMETER0.060 INCHES MINIMUM AND 0.066 INCHES MAXIMUM IN
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 10-571913-20G?
10-571913-20G is a NUT,SELF-LOCKING,HEXAGON.
What is the NSN for 10-571913-20G?
10-571913-20G is cataloged in the U.S. Government catalog under NSN 5310-01-266-3957. 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.