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1.37508UNC2BT3G4NSAFAL1 — NUT,PLAIN,HEXAGON

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

1.37508UNC2BT3G4NSAFAL1: NUT,PLAIN,HEXAGON.

The NUT,PLAIN,HEXAGON is a the manufacturer industrial component. Key specifications include material: STEEL OVERALL, nut_style: HEXAGON, nut_height: 1.203 INCHES NOMINAL IN, thread_class: 2B, thread_series: UN, thread_direction: RIGHT-HAND. This part is cataloged in the U.S.

Government catalog under NSN 5310-01-037-2773, 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
1.37508UNC2BT3G4NSAFAL1
NSN: 5310-01-037-2773
FSC: 5310 — Nuts and Washers
CAGE: 03950 — NAVAL INVENTORY CONTROL POINT MECHANICSBURG (USA)
SPECIFICATIONS
materialSTEEL OVERALL
nut_styleHEXAGON
nut_height1.203 INCHES NOMINAL IN
thread_class2B
thread_seriesUN
thread_directionRIGHT-HAND
width_across_flats2.029 INCHES NOMINAL IN
nominal_thread_size1.375 INCHES IN
thread_quantity_per_inch8
criticality_code_justificationZZZX
departure_from_cited_designatorMATERIAL CONTROLLED IAW NAVSEA 0948-LP-045-7010 MATERIAL CONTROL STANDARD FOR LEVEL I ITEMS
material_document_and_classificationMIL-S-1222,TYPE 2,SYMBOL 4 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL
NSN5310-01-037-2773
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 1.37508UNC2BT3G4NSAFAL1 · 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: 2.029 INCHES NOMINAL IN
•
THREAD SERIES: UN
•
CRITICALITY CODE JUSTIFICATION: ZZZX
•
MATERIAL DOCUMENT AND CLASSIFICATION: MIL-S-1222,TYPE 2,SYMBOL 4 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL
•
THREAD DIRECTION: RIGHT-HAND
•
NOMINAL THREAD SIZE: 1.375 INCHES IN
•
DEPARTURE FROM CITED DESIGNATOR: MATERIAL CONTROLLED IAW NAVSEA 0948-LP-045-7010 MATERIAL CONTROL STANDARD FOR LEVEL I ITEMS
•
NUT HEIGHT: 1.203 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS
WIDTH ACROSS FLATS2.029 INCHES NOMINAL IN
THREAD SERIESUN
CRITICALITY CODE JUSTIFICATIONZZZX
MATERIAL DOCUMENT AND CLASSIFICATIONMIL-S-1222,TYPE 2,SYMBOL 4 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL
THREAD DIRECTIONRIGHT-HAND
NOMINAL THREAD SIZE1.375 INCHES IN
DEPARTURE FROM CITED DESIGNATORMATERIAL CONTROLLED IAW NAVSEA 0948-LP-045-7010 MATERIAL CONTROL STANDARD FOR LEVEL I ITEMS
NUT HEIGHT1.203 INCHES NOMINAL IN
NUT STYLEHEXAGON
THREAD CLASS2B
SUBSTITUTES & CROSS-REFERENCES 6
MS16286-13L1Reference document
Same NSN cross-reference
Reference document — Secondary reference
MILS1222TY3STYAGR41 3/8-8UN-2BS1Reference document
Same NSN cross-reference
Reference document — Secondary reference
MIL-DTL-1222Reference document
Same NSN cross-reference
Reference document — Identification reference
MS16286-13Reference document
Same NSN cross-reference
Reference document — Identification reference
1.37508UNC2BT3G4NSAFAReference document
Same NSN cross-reference
Reference document — Secondary reference
MILS1222TY3STYAGR4 1 3/8-8UN-2BReference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Terminal item — no further procurement; issued until stock is exhaustedNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 1.37508UNC2BT3G4NSAFAL1?
1.37508UNC2BT3G4NSAFAL1 is a NUT,PLAIN,HEXAGON.
What parts can replace 1.37508UNC2BT3G4NSAFAL1?
There are 6 known substitutes for 1.37508UNC2BT3G4NSAFAL1: MS16286-13L1, MILS1222TY3STYAGR41 3/8-8UN-2BS1, MIL-DTL-1222 and 3 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 1.37508UNC2BT3G4NSAFAL1?
1.37508UNC2BT3G4NSAFAL1 is cataloged in the U.S. Government catalog under NSN 5310-01-037-2773. 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.