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PartsTable / COMPONENT / 258760 ITEM 78L1
258760 ITEM 78L1 ✓ Verified by PartsTable
— · BOLT SCREW
WHAT YOU NEED TO KNOW
Grade/class stamped on head determines strength Metric and imperial threads look similar — measure pitch
Verify thread pitch — metric != imperial
PRODUCT OVERVIEW

The STUD,CONTINUOUS THREAD is a the manufacturer industrial component. Key specifications include material: NICKEL ALLOY K-500, thread_class: 3A LOCATION NOT OTHERWISE SPECIFIED A, overall_length: 2.192 INCHES NOMINAL IN, thread_direction: RIGHT-HAND LOCATION NOT OTHERWISE SPECIFIED, nominal_thread_size: 0.500 INCHES LOCATION NOT OTHERWISE SPECIFIED IN, thread_quantity_per_inch: 13 LOCATION NOT OTHERWISE SPECIFIED. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5307-01-306-7552, 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
258760 ITEM 78L1
NSN: 5307-01-306-7552
FSC: 5307
CAGE: 03950 — NAVAL INVENTORY CONTROL POINT MECHANICSBURG (USA)
SPECIFICATIONS
materialNICKEL ALLOY K-500
thread_class3A LOCATION NOT OTHERWISE SPECIFIED A
overall_length2.192 INCHES NOMINAL IN
special_featuresOVERALL LENGTH - 2.192 IN PLUS/MINUS.020; 45 DEGREE CHAMFER BOTH ENDS PLUS/MINUS .030 TO .005; MATERIAL - NICKEL, COPPER AND ALUMINUM IN
thread_directionRIGHT-HAND LOCATION NOT OTHERWISE SPECIFIED
nominal_thread_size0.500 INCHES LOCATION NOT OTHERWISE SPECIFIED IN
thread_quantity_per_inch13 LOCATION NOT OTHERWISE SPECIFIED
thread_series_designatorUNIFIED NATIONAL COARSE (UNC) LOCATION NOT OTHERWISE SPECIFIED
nondefinitive_spec/std_dataIV TYPE
departure_from_cited_documentMATERIAL CONTROLLED IAW NAVSEA 0948-LP-045-7010 MATERIAL CONTROL STANDARD FOR LEVEL I ITEMS
criticality_code_justificationZZZW
material_document_and_classificationQQ-N-286,GR 500 FED SPEC SINGLE MATERIAL RESPONSE
NSN5307-01-306-7552
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: 258760 ITEM 78L1 · 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
•
THREAD DIRECTION: RIGHT-HAND LOCATION NOT OTHERWISE SPECIFIED
•
NONDEFINITIVE SPEC/STD DATA: IV TYPE
•
MATERIAL: NICKEL ALLOY K-500
•
DEPARTURE FROM CITED DOCUMENT: MATERIAL CONTROLLED IAW NAVSEA 0948-LP-045-7010 MATERIAL CONTROL STANDARD FOR LEVEL I ITEMS
•
NOMINAL THREAD SIZE: 0.500 INCHES LOCATION NOT OTHERWISE SPECIFIED IN
•
THREAD QUANTITY PER INCH: 13 LOCATION NOT OTHERWISE SPECIFIED
TECHNICAL CHARACTERISTICS (FLIS)
SPECIAL FEATURESOVERALL LENGTH - 2.192 IN PLUS/MINUS.020; 45 DEGREE CHAMFER BOTH ENDS PLUS/MINUS .030 TO .005; MATERIAL - NICKEL, COPPER AND ALUMINUM IN
THREAD DIRECTIONRIGHT-HAND LOCATION NOT OTHERWISE SPECIFIED
OVERALL LENGTH2.192 INCHES NOMINAL IN
NONDEFINITIVE SPEC/STD DATAIV TYPE
MATERIALNICKEL ALLOY K-500
DEPARTURE FROM CITED DOCUMENTMATERIAL CONTROLLED IAW NAVSEA 0948-LP-045-7010 MATERIAL CONTROL STANDARD FOR LEVEL I ITEMS
NOMINAL THREAD SIZE0.500 INCHES LOCATION NOT OTHERWISE SPECIFIED IN
THREAD QUANTITY PER INCH13 LOCATION NOT OTHERWISE SPECIFIED
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-N-286,GR 500 FED SPEC SINGLE MATERIAL RESPONSE
CRITICALITY CODE JUSTIFICATIONZZZW
VERIFIED SUBSTITUTES & CROSS-REFERENCES 26
MIL-DTL-1222 TYPE IVInterchangeable
interchangeable cross-reference
interchangeable
QQ-N-286 GR500L1Interchangeable
interchangeable cross-reference
interchangeable
3/4-10UNC-3A X 2 7/8Interchangeable
interchangeable cross-reference
interchangeable
ER2642-771-01D3Interchangeable
interchangeable cross-reference
interchangeable
MIL-DTL-18240L1Interchangeable
interchangeable cross-reference
interchangeable
MIL-DTL-18240.375-16UNC-3A1.125Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 258760 ITEM 78L1?
258760 ITEM 78L1 is a STUD,CONTINUOUS THREAD.
What parts can replace 258760 ITEM 78L1?
There are 26 known substitutes for 258760 ITEM 78L1: MIL-DTL-1222 TYPE IV, QQ-N-286 GR500L1, 3/4-10UNC-3A X 2 7/8 and 23 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 258760 ITEM 78L1?
258760 ITEM 78L1 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5307-01-306-7552. This indicates validated use in U.S. government and defense supply chains.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026