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3750-4-1 — NRP,CALIBRATOR,PORT

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

3750-4-1: NRP,CALIBRATOR,PORT.

The NRP,CALIBRATOR,PORT is a the manufacturer industrial component. Key specifications include material: STEEL COMP 1213 OVERALL, nut_style: HEXAGON, nut_height: 0.547 INCHES NOMINAL IN, thread_class: 2B, thread_series: UNF, thread_direction: RIGHT-HAND. This part is cataloged in the U.S.

Government catalog under NSN 5310-00-270-2594, 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
3750-4-1
NSN: 5310-00-270-2594
NIINs: 002702594, 010105099, 016159775
FSC: 5310 — Nuts and Washers
CAGE: 23926 — KOMATSU AMERICA CORPORATION (USA)
SPECIFICATIONS
materialSTEEL COMP 1213 OVERALL
nut_styleHEXAGON
nut_height0.547 INCHES NOMINAL IN
thread_class2B
thread_seriesUNF
thread_directionRIGHT-HAND
surface_treatmentZINC OVERALL
width_across_flats1.875 INCHES NOMINAL IN
nominal_thread_size1.500 INCHES IN
bearing_surface_typeWASHER FACED
thread_quantity_per_inch12
material_document_and_classificationQQ-S-637 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
NSN5310-00-270-2594
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 3750-4-1 · 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
•
WIDTH ACROSS FLATS: 1.875 INCHES NOMINAL IN
•
THREAD SERIES: UNF
•
MATERIAL DOCUMENT AND CLASSIFICATION: QQ-S-637 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
•
THREAD DIRECTION: RIGHT-HAND
•
NOMINAL THREAD SIZE: 1.500 INCHES IN
•
NUT HEIGHT: 0.547 INCHES NOMINAL IN
•
SURFACE TREATMENT: ZINC OVERALL
•
NUT STYLE: HEXAGON
TECHNICAL CHARACTERISTICS
WIDTH ACROSS FLATS1.875 INCHES NOMINAL IN
THREAD SERIESUNF
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-S-637 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
THREAD DIRECTIONRIGHT-HAND
NOMINAL THREAD SIZE1.500 INCHES IN
NUT HEIGHT0.547 INCHES NOMINAL IN
SURFACE TREATMENTZINC OVERALL
NUT STYLEHEXAGON
THREAD CLASS2B
THREAD QUANTITY PER INCH12
SUBSTITUTES & CROSS-REFERENCES

No substitute or cross-reference records for this part.

LIFECYCLE
NSN statusCancelled· U.S. Government catalog
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 3750-4-1?
3750-4-1 is a NRP,CALIBRATOR,PORT.
What is the NSN for 3750-4-1?
3750-4-1 is cataloged in the U.S. Government catalog under NSN 5310-00-270-2594. 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.