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Technical Data Sheet
PartsTable / COMPONENT / 125139
125139 ✓ Verified by PartsTable
Disguise · 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 DUMMY LOAD,ELECTRICAL is a Disguise industrial component. Key specifications include material: STEEL OVERALL, head_type: SOLID, head_style: FILLISTER, head_height: 0.410 INCHES NOMINAL IN, thread_class: 2A EXTERNAL A, head_diameter: 0.175 INCHES NOMINAL IN. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5305-00-206-9850, 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
125139
NSN: 5305-00-206-9850
FSC: 5305
CAGE: 57712 — TELEMECHANICS INC (USA)
SPECIFICATIONS
materialSTEEL OVERALL
head_typeSOLID
head_styleFILLISTER
head_height0.410 INCHES NOMINAL IN
thread_class2A EXTERNAL A
head_diameter0.175 INCHES NOMINAL IN
thread_length0.590 INCHES NOMINAL EXTERNAL IN
overall_length1.220 INCHES NOMINAL IN
fastener_length0.156 INCHES NOMINAL IN
connection_stylePLAIN (OPTIONAL END)
style_designatorPLUG, MACHINE
thread_directionRIGHT-HAND EXTERNAL
NSN5305-00-206-9850
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: 125139 · Disguise ⚠ 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
•
NOMINAL THREAD DIAMETER: 0.112 INCHES IN
•
DISTANCE FROM LARGEST BEARING SURFACE OF HEAD TO END OF FIRST DIAMETER: 0.025 INCHES NOMINAL IN
•
FIRST DIAMETER FROM HEAD: 0.094 INCHES NOMINAL IN
•
HEAD STYLE: FILLISTER
•
EXTERNALLY RELIEVED BODY DIAMETER QUANTITY: 1
•
THREAD LENGTH: 0.125 INCHES MINIMUM IN
•
INTERNAL DRIVE STYLE: CROSS RECESS TYPE 1
•
THREAD DIRECTION: RIGHT-HAND
TECHNICAL CHARACTERISTICS (FLIS)
NOMINAL THREAD DIAMETER0.112 INCHES IN
DISTANCE FROM LARGEST BEARING SURFACE OF HEAD TO END OF FIRST DIAMETER0.025 INCHES NOMINAL IN
FIRST DIAMETER FROM HEAD0.094 INCHES NOMINAL IN
HEAD STYLEFILLISTER
EXTERNALLY RELIEVED BODY DIAMETER QUANTITY1
THREAD LENGTH0.125 INCHES MINIMUM IN
INTERNAL DRIVE STYLECROSS RECESS TYPE 1
THREAD DIRECTIONRIGHT-HAND
THREAD QUANTITY PER INCH40
THREAD SERIES DESIGNATORUNIFIED NATIONAL COARSE (UNC)
VERIFIED SUBSTITUTES & CROSS-REFERENCES 16
3386Interchangeable
interchangeable cross-reference
interchangeable
FFB187/01-220Interchangeable
interchangeable cross-reference
interchangeable
T138Interchangeable
interchangeable cross-reference
interchangeable
LST1156S8201-1187125Interchangeable
interchangeable cross-reference
interchangeable
3386RHInterchangeable
interchangeable cross-reference
interchangeable
3386LHInterchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 125139?
125139 is a DUMMY LOAD,ELECTRICAL manufactured by Disguise.
What parts can replace 125139?
There are 16 known substitutes for 125139: 3386, FFB187/01-220, T138 and 13 more. Substitute compatibility should be verified for your specific system.
Is 125139 still available?
125139 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