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DF330705 FIND 21L1 — STUD,CONTINUOUS THREAD

✓ Government record, cited
— · BOLT SCREW
PRODUCT OVERVIEW

DF330705 FIND 21L1: STUD,CONTINUOUS THREAD.

The STUD,CONTINUOUS THREAD is a the manufacturer industrial component. Key specifications include material: NICKEL ALLOY, thread_class: 3A LOCATION NOT OTHERWISE SPECIFIED A, overall_length: 4.000 INCHES NOMINAL IN, thread_direction: RIGHT-HAND LOCATION NOT OTHERWISE SPECIFIED, nominal_thread_size: 0.875 INCHES LOCATION NOT OTHERWISE SPECIFIED IN, thread_quantity_per_inch: 9 LOCATION NOT OTHERWISE SPECIFIED. This part is cataloged in the U.S.

Government catalog under NSN 5307-01-352-1778, 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
DF330705 FIND 21L1
NSN: 5307-01-352-1778
FSC: 5307 — Studs
CAGE: 03950 — NAVAL INVENTORY CONTROL POINT MECHANICSBURG (USA)
SPECIFICATIONS
materialNICKEL ALLOY
thread_class3A LOCATION NOT OTHERWISE SPECIFIED A
overall_length4.000 INCHES NOMINAL IN
thread_directionRIGHT-HAND LOCATION NOT OTHERWISE SPECIFIED
nominal_thread_size0.875 INCHES LOCATION NOT OTHERWISE SPECIFIED IN
thread_quantity_per_inch9 LOCATION NOT OTHERWISE SPECIFIED
thread_series_designatorUNIFIED NATIONAL COARSE (UNC) LOCATION NOT OTHERWISE SPECIFIED
nondefinitive_spec/std_data4 TYPE AND 500 GRADE
criticality_code_justificationZZZY
reference_number_differentiating_characteristicsQUALITY CONTROL IAW NAVSHIPS 0948-045-7010 MATERIAL IDENTIFICATION AND CONTROL INSTRUCTION FOR LEVEL 1 ITEMS
NSN5307-01-352-1778
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: DF330705 FIND 21L1 · OEM ⚠ VERIFY BEFORE ORDERING Verify thread pitch before ordering — metric (M8×1.25) ≠ imperial (5/16-18). Wrong thread = wrong part. Grade/class stamped on bolt head determines tensile strength ✓ BROKER TIP Grade/class stamped on head determines tensile strength. Grade 8 > Grade 5 > Grade 2. Always confirm head marking matches specification requirement PARTSTABLE TECHNICAL DRAWING — NOT TO SCALE
KEY FEATURES
•
CRITICALITY CODE JUSTIFICATION: ZZZY
•
THREAD DIRECTION: RIGHT-HAND LOCATION NOT OTHERWISE SPECIFIED
•
NOMINAL THREAD SIZE: 0.875 INCHES LOCATION NOT OTHERWISE SPECIFIED IN
•
NONDEFINITIVE SPEC/STD DATA: 4 TYPE AND 500 GRADE
•
THREAD CLASS: 3A LOCATION NOT OTHERWISE SPECIFIED A
•
THREAD QUANTITY PER INCH: 9 LOCATION NOT OTHERWISE SPECIFIED
•
MATERIAL: NICKEL ALLOY
TECHNICAL CHARACTERISTICS
CRITICALITY CODE JUSTIFICATIONZZZY
OVERALL LENGTH4.000 INCHES NOMINAL IN
THREAD DIRECTIONRIGHT-HAND LOCATION NOT OTHERWISE SPECIFIED
NOMINAL THREAD SIZE0.875 INCHES LOCATION NOT OTHERWISE SPECIFIED IN
NONDEFINITIVE SPEC/STD DATA4 TYPE AND 500 GRADE
THREAD CLASS3A LOCATION NOT OTHERWISE SPECIFIED A
THREAD QUANTITY PER INCH9 LOCATION NOT OTHERWISE SPECIFIED
MATERIALNICKEL ALLOY
THREAD SERIES DESIGNATORUNIFIED NATIONAL COARSE (UNC) LOCATION NOT OTHERWISE SPECIFIED
REFERENCE NUMBER DIFFERENTIATING CHARACTERISTICSQUALITY CONTROL IAW NAVSHIPS 0948-045-7010 MATERIAL IDENTIFICATION AND CONTROL INSTRUCTION FOR LEVEL 1 ITEMS
SUBSTITUTES & CROSS-REFERENCES 8
MILDTL1222 TYIV 7/8-9UNC-3AX4Reference document
Same NSN cross-reference
Reference document — Secondary reference
SIZE 7/8-9UNC-3A X 4L1Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
MILDTL1222 TYIV 7/8-9UNC-3AX4L1Reference document
Same NSN cross-reference
Reference document — Secondary reference
MIL-DTL-1222L1Reference document
Same NSN cross-reference
Reference document — Secondary reference
MIL-DTL-1222Reference document
Same NSN cross-reference
Reference document — Identification reference
801-6405340 FIND 21L1Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
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 DF330705 FIND 21L1?
DF330705 FIND 21L1 is a STUD,CONTINUOUS THREAD.
What parts can replace DF330705 FIND 21L1?
There are 8 known substitutes for DF330705 FIND 21L1: MILDTL1222 TYIV 7/8-9UNC-3AX4, SIZE 7/8-9UNC-3A X 4L1, MILDTL1222 TYIV 7/8-9UNC-3AX4L1 and 5 more. Substitute compatibility should be verified for your specific system.
What is the NSN for DF330705 FIND 21L1?
DF330705 FIND 21L1 is cataloged in the U.S. Government catalog under NSN 5307-01-352-1778. 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.