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1113637 — NUT,PLAIN,SQUARE

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

1113637: NUT,PLAIN,SQUARE.

The NUT,PLAIN,SQUARE is a the manufacturer industrial component. Key specifications include material: STEEL OVERALL, nut_style: SQUARE, nut_height: 0.375 INCHES NOMINAL IN, thread_class: 3B, thread_series: UNS, special_features: FOUR TAPPED HOLES THRU CORNERS 0.250-20UNC-3B 1.750 IN. APART COUNTERSUNK 90.0 DEG ON BOTH SIDES IN.

This part is cataloged in the U.S. Government catalog under NSN 5310-01-207-0239, 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
1113637
NSN: 5310-01-207-0239
FSC: 5310 — Nuts and Washers
CAGE: 10001 — NAVAIR AND NAVSEA MANAGED ORIGINAL DESIGN ACTIVITY DWG NOT MATERIAL/PARTS SUPPLIER (USA)
SPECIFICATIONS
materialSTEEL OVERALL
nut_styleSQUARE
nut_height0.375 INCHES NOMINAL IN
thread_class3B
thread_seriesUNS
special_featuresFOUR TAPPED HOLES THRU CORNERS 0.250-20UNC-3B 1.750 IN. APART COUNTERSUNK 90.0 DEG ON BOTH SIDES IN
thread_directionRIGHT-HAND
width_across_flats2.250 INCHES NOMINAL IN
nominal_thread_size1.750 INCHES IN
bearing_surface_typeFLAT
counterbore_diameter1.781 INCHES NOMINAL FIRST END IN
nut_counterbore_depth0.030 INCHES MINIMUM AND 0.040 INCHES MAXIMUM FIRST END IN
NSN5310-01-207-0239
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 1113637 · 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: 2.250 INCHES NOMINAL IN
•
THREAD SERIES: UNS
•
NUT COUNTERBORE DEPTH: 0.030 INCHES MINIMUM AND 0.040 INCHES MAXIMUM FIRST END IN
•
THREAD DIRECTION: RIGHT-HAND
•
NOMINAL THREAD SIZE: 1.750 INCHES IN
•
COUNTERBORE DIAMETER: 1.781 INCHES NOMINAL FIRST END IN
•
NUT HEIGHT: 0.375 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS
WIDTH ACROSS FLATS2.250 INCHES NOMINAL IN
THREAD SERIESUNS
NUT COUNTERBORE DEPTH0.030 INCHES MINIMUM AND 0.040 INCHES MAXIMUM FIRST END IN
THREAD DIRECTIONRIGHT-HAND
NOMINAL THREAD SIZE1.750 INCHES IN
COUNTERBORE DIAMETER1.781 INCHES NOMINAL FIRST END IN
NUT HEIGHT0.375 INCHES NOMINAL IN
SPECIAL FEATURESFOUR TAPPED HOLES THRU CORNERS 0.250-20UNC-3B 1.750 IN. APART COUNTERSUNK 90.0 DEG ON BOTH SIDES IN
NUT STYLESQUARE
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 1113637?
1113637 is a NUT,PLAIN,SQUARE.
What is the NSN for 1113637?
1113637 is cataloged in the U.S. Government catalog under NSN 5310-01-207-0239. This indicates validated use in U.S. government and defense supply chains.
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