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Technical Data Sheet

1340/1603D — NUT,SELF-LOCKING,HEXAGON

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

1340/1603D: NUT,SELF-LOCKING,HEXAGON.

The NUT,SELF-LOCKING,HEXAGON is a the manufacturer industrial component. Key specifications include material: ZINC OVERALL, nut_style: HEXAGONHEXAGON, thread_series: UNIFIED NATIONAL COARSE (UNC)UNIFIED NATIONAL COARSE (UNC), thread_direction: RIGHT-HANDRIGHT-HAND, nominal_thread_size: 0.3125 INCHES0.3125 INCHES IN, end_item_identification: 2420-01-683-12812420-01-683-1281. This part is cataloged in the U.S.

Government catalog under NSN 5310-01-714-3221, 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
1340/1603D
NSN: 5310-01-714-3221
FSC: 5310 — Nuts and Washers
CAGE: 0JKF0 — JCB INC. (USA)
SPECIFICATIONS
materialZINC OVERALL
nut_styleHEXAGONHEXAGON
thread_seriesUNIFIED NATIONAL COARSE (UNC)UNIFIED NATIONAL COARSE (UNC)
thread_directionRIGHT-HANDRIGHT-HAND
nominal_thread_size0.3125 INCHES0.3125 INCHES IN
end_item_identification2420-01-683-12812420-01-683-1281
nondefinitive_spec/std_dataI GRADE
material_document_and_classificationBS 4929 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
part_name_assigned_by_controlling_agencySTANDARD HEXAGON UNC SELF-LOCKING NUTSTANDARD HEXAGON UNC SELF-LOCKING NUT
NSN5310-01-714-3221
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 1340/1603D · 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
•
THREAD SERIES: UNIFIED NATIONAL COARSE (UNC)UNIFIED NATIONAL COARSE (UNC)
•
MATERIAL DOCUMENT AND CLASSIFICATION: BS 4929 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
•
THREAD DIRECTION: RIGHT-HANDRIGHT-HAND
•
NOMINAL THREAD SIZE: 0.3125 INCHES0.3125 INCHES IN
•
NONDEFINITIVE SPEC/STD DATA: I GRADE
•
NUT STYLE: HEXAGONHEXAGON
TECHNICAL CHARACTERISTICS
THREAD SERIESUNIFIED NATIONAL COARSE (UNC)UNIFIED NATIONAL COARSE (UNC)
MATERIAL DOCUMENT AND CLASSIFICATIONBS 4929 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
THREAD DIRECTIONRIGHT-HANDRIGHT-HAND
NOMINAL THREAD SIZE0.3125 INCHES0.3125 INCHES IN
NONDEFINITIVE SPEC/STD DATAI GRADE
PART NAME ASSIGNED BY CONTROLLING AGENCYSTANDARD HEXAGON UNC SELF-LOCKING NUTSTANDARD HEXAGON UNC SELF-LOCKING NUT
NUT STYLEHEXAGONHEXAGON
END ITEM IDENTIFICATION2420-01-683-12812420-01-683-1281
MATERIALZINC OVERALL
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 1340/1603D?
1340/1603D is a NUT,SELF-LOCKING,HEXAGON.
What is the NSN for 1340/1603D?
1340/1603D is cataloged in the U.S. Government catalog under NSN 5310-01-714-3221. This indicates validated use in U.S. government and defense supply chains.
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