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BR9520-4118 — NUT,SELF-LOCKING,ROUND

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

BR9520-4118: NUT,SELF-LOCKING,ROUND.

The NUT,SELF-LOCKING,ROUND is a the manufacturer industrial component. Key specifications include nut_style: ROUND, lubrication: WAX, temp_rating: 75.0 FAHRENHEIT MINIMUM AND 100.0 FAHRENHEIT MAXIMUM DEGF, nut_diameter: 3.110 INCHES MINIMUM AND 3.130 INCHES MAXIMUM IN, thread_class: 3B, nut_thickness: 0.366 INCHES MINIMUM AND 0.396 INCHES MAXIMUM IN. This part is cataloged in the U.S.

Government catalog under NSN 5310-01-366-2817, 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
BR9520-4118
NSN: 5310-01-366-2817
FSC: 5310 — Nuts and Washers
CAGE: 019L2 — ESNA, LLC (USA)
SPECIFICATIONS
nut_styleROUND
lubricationWAX
temp_rating75.0 FAHRENHEIT MINIMUM AND 100.0 FAHRENHEIT MAXIMUM DEGF
nut_diameter3.110 INCHES MINIMUM AND 3.130 INCHES MAXIMUM IN
thread_class3B
nut_thickness0.366 INCHES MINIMUM AND 0.396 INCHES MAXIMUM IN
thread_seriesUNJS
hardness_rating30.0 ROCKWELL C MINIMUM AND 36.0 ROCKWELL C MAXIMUM
locking_featurePREVAILING TORQUE ALL METAL DESIGN
thread_directionRIGHT-HAND
drive_point_depth0.078 INCHES MINIMUM AND 0.108 INCHES MAXIMUM IN
drive_point_width0.234 INCHES MINIMUM AND 0.266 INCHES MAXIMUM IN
NSN5310-01-366-2817
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: BR9520-4118 · 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
•
LUBRICATION: WAX
•
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: QQ-P-416 TY 2,CL 3 FED SPEC SINGLE TREATMENT RESPONSE NUT
•
THREAD SERIES: UNJS
•
TEMP RATING: 75.0 FAHRENHEIT MINIMUM AND 100.0 FAHRENHEIT MAXIMUM DEGF
•
HARDNESS RATING: 30.0 ROCKWELL C MINIMUM AND 36.0 ROCKWELL C MAXIMUM
•
MATERIAL DOCUMENT AND CLASSIFICATION: 66JGAAMS 6370 FED STD SINGLE MATERIAL RESPONSE OR AMS 6731 ASSN STD SINGLE MATERIAL RESPONSE NUT
•
DRIVE POINT WIDTH: 0.234 INCHES MINIMUM AND 0.266 INCHES MAXIMUM IN
TECHNICAL CHARACTERISTICS
LUBRICATIONWAX
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONQQ-P-416 TY 2,CL 3 FED SPEC SINGLE TREATMENT RESPONSE NUT
THREAD SERIESUNJS
TEMP RATING75.0 FAHRENHEIT MINIMUM AND 100.0 FAHRENHEIT MAXIMUM DEGF
HARDNESS RATING30.0 ROCKWELL C MINIMUM AND 36.0 ROCKWELL C MAXIMUM
MATERIAL DOCUMENT AND CLASSIFICATION66JGAAMS 6370 FED STD SINGLE MATERIAL RESPONSE OR AMS 6731 ASSN STD SINGLE MATERIAL RESPONSE NUT
MATERIAL DOCUMENT AND CLASSIFICATIONZYTEL-103 CAGEC 81205 MFR REF SINGLE MATERIAL RESPONSE LOCKING INSERT
DRIVE POINT WIDTH0.234 INCHES MINIMUM AND 0.266 INCHES MAXIMUM IN
THREAD DIRECTIONRIGHT-HAND
NOMINAL THREAD SIZE2.540 INCHES 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 BR9520-4118?
BR9520-4118 is a NUT,SELF-LOCKING,ROUND.
What is the NSN for BR9520-4118?
BR9520-4118 is cataloged in the U.S. Government catalog under NSN 5310-01-366-2817. This indicates validated use in U.S. government and defense supply chains.
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