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Technical Data Sheet
PartsTable / COMPONENT / 950326-78
950326-78 ✓ 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

STUD ASSEMBLY,TURNLOCK FASTENER. Key specifications include diameter: 0.303 INCHES NOMINAL IN, material: STEEL OVERALL, drive_type: CROSS RECESS, eyelet_length: 0.322 INCHES NOMINAL IN, stud_head_height: 0.093 INCHES NOMINAL IN, surface_treatment: CADMIUM OVERALL. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5325-00-726-6699, 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
950326-78
NSN: 5325-00-726-6699
FSC: 5325
CAGE: 06481 — NORTHROP GRUMMAN SYSTEMS CORPORATION DBA NORTHROP GRUMMAN SYSTEMS CORP (USA)
SPECIFICATIONS
diameter0.303 INCHES NOMINAL IN
materialSTEEL OVERALL
drive_typeCROSS RECESS
eyelet_length0.322 INCHES NOMINAL IN
stud_head_height0.093 INCHES NOMINAL IN
surface_treatmentCADMIUM OVERALL
stud_assembly_styleSTUD ASSEMBLY
eyelet_outside_diameter0.244 INCHES MINIMUM AND 0.250 INCHES MAXIMUM IN
turnlock_stud_head_styleFLAT FILLISTER
material_accommodated_thickness0.060 INCHES MINIMUM AND 0.119 INCHES MAXIMUM IN
distance_from_engaging_member_to_largest_bearing_surface_of_head0.602 INCHES MINIMUM AND 0.617 INCHES MAXIMUM IN
NSN5325-00-726-6699
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: 950326-78 · 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
•
TURNLOCK STUD HEAD STYLE: FLAT FILLISTER
•
EYELET LENGTH: 0.322 INCHES NOMINAL IN
•
DRIVE TYPE: CROSS RECESS
•
EYELET OUTSIDE DIAMETER: 0.244 INCHES MINIMUM AND 0.250 INCHES MAXIMUM IN
•
STUD ASSEMBLY STYLE: STUD ASSEMBLY
•
MATERIAL: STEEL OVERALL
•
STUD HEAD HEIGHT: 0.093 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS (FLIS)
END ITEM IDENTIFICATIONW/S:TACTICAL AIR OPNS MODULE (AN/TYQ-(23); AIRCRAFT, C-18A, EC-18B; AIRCRAFT (AC-130H, MC-130H, EC-130E, HC-130); AIRCRAFT, C-2A (REPROCURED); AIRCRAFT, AIRLIFTER C-17A; HELICOPTER, SEARCH AND RESCUE, HH-60H; HELICOPTER, HH-53H PAVE LOW; HELICOPTER, MH-53E; HELICOPTER, CARRIER BASED ASW, SH-60F A
TURNLOCK STUD HEAD STYLEFLAT FILLISTER
EYELET LENGTH0.322 INCHES NOMINAL IN
DRIVE TYPECROSS RECESS
EYELET OUTSIDE DIAMETER0.244 INCHES MINIMUM AND 0.250 INCHES MAXIMUM IN
STUD ASSEMBLY STYLESTUD ASSEMBLY
MATERIALSTEEL OVERALL
STUD HEAD HEIGHT0.093 INCHES NOMINAL IN
MATERIAL ACCOMMODATED THICKNESS0.060 INCHES MINIMUM AND 0.119 INCHES MAXIMUM IN
DISTANCE FROM ENGAGING MEMBER TO LARGEST BEARING SURFACE OF HEAD0.602 INCHES MINIMUM AND 0.617 INCHES MAXIMUM IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 19
50-10-3Interchangeable
interchangeable cross-reference
interchangeable
8327328Interchangeable
interchangeable cross-reference
interchangeable
406Interchangeable
interchangeable cross-reference
interchangeable
2500-1-5Interchangeable
interchangeable cross-reference
interchangeable
064735Interchangeable
interchangeable cross-reference
interchangeable
504001-000-0030Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 950326-78?
950326-78 is a STUD ASSEMBLY,TURNLOCK FASTENER.
What parts can replace 950326-78?
There are 19 known substitutes for 950326-78: 50-10-3, 8327328, 406 and 16 more. Substitute compatibility should be verified for your specific system.
Is 950326-78 still available?
950326-78 is currently cancelled.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026