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PartsTable / COMPONENT / 520011966
520011966 ✓ 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 SCREW,SHOULDER is a the manufacturer industrial component. Key specifications include material: STEEL OVERALL, head_style: FLAT CHAMFER, head_height: 0.094 INCHES NOMINAL IN, thread_class: 3A A, head_diameter: 0.250 INCHES NOMINAL IN, thread_length: 0.281 INCHES MINIMUM IN. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5305-00-207-4224, 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
520011966
NSN: 5305-00-207-4224
FSC: 5305
CAGE: 57712 — TELEMECHANICS INC (USA)
SPECIFICATIONS
materialSTEEL OVERALL
head_styleFLAT CHAMFER
head_height0.094 INCHES NOMINAL IN
thread_class3A A
head_diameter0.250 INCHES NOMINAL IN
thread_length0.281 INCHES MINIMUM IN
shoulder_shapeROUND FIRST SHOULDER
fastener_length0.349 INCHES NOMINAL IN
shoulder_length0.068 INCHES NOMINAL FIRST SHOULDER IN
features_providedCASEHARDENED
surface_treatmentCHROMATE ZINC OVERALL
internal_drive_styleCROSS RECESS TYPE 1
NSN5305-00-207-4224
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: 520011966 · 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
•
INTERNAL DRIVE STYLE: CROSS RECESS TYPE 1
•
THREAD SERIES DESIGNATOR: UNF
•
FEATURES PROVIDED: CASEHARDENED
•
SHOULDER LENGTH: 0.068 INCHES NOMINAL FIRST SHOULDER IN
•
FASTENER LENGTH: 0.349 INCHES NOMINAL IN
•
THREAD LENGTH: 0.281 INCHES MINIMUM IN
•
THREAD QUANTITY PER INCH: 40
•
MATERIAL: STEEL OVERALL
TECHNICAL CHARACTERISTICS (FLIS)
INTERNAL DRIVE STYLECROSS RECESS TYPE 1
THREAD SERIES DESIGNATORUNF
FEATURES PROVIDEDCASEHARDENED
SHOULDER LENGTH0.068 INCHES NOMINAL FIRST SHOULDER IN
FASTENER LENGTH0.349 INCHES NOMINAL IN
THREAD LENGTH0.281 INCHES MINIMUM IN
THREAD QUANTITY PER INCH40
MATERIALSTEEL OVERALL
THREAD CLASS3A A
HEAD HEIGHT0.094 INCHES NOMINAL IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 10
1196Interchangeable
interchangeable cross-reference
interchangeable
45353Interchangeable
interchangeable cross-reference
interchangeable
MS15564-6Interchangeable
interchangeable cross-reference
interchangeable
6240PL1244173Interchangeable
interchangeable cross-reference
interchangeable
XH-4002Interchangeable
interchangeable cross-reference
interchangeable
57962Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 520011966?
520011966 is a SCREW,SHOULDER.
What parts can replace 520011966?
There are 10 known substitutes for 520011966: 1196, 45353, MS15564-6 and 7 more. Substitute compatibility should be verified for your specific system.
Is 520011966 still available?
520011966 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