PartsTable
Technical Data Sheet
PartsTable / MRO / 31-17
31-17 ✓ Verified by PartsTable
Multibrackets · MRO · MRO_GENERAL
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

With its modular construction, Pro Series parts offer vast possibilities to change, update, and reconfigure a Pro Series installation. Combine this chrome extension pipe with your existing Pro Series setup to create longer or customized pole configurations.<br><br>The M Pro Series - Extension Pipe 0.5m Black consists of one 50cm steel pole with a 50mm diameter finished in chrome. Its sturdy construction ensures durability while providing a polished, chrome aesthetic that enhances your Pro Series installations.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5307-00-156-1574, indicating validated use in U.S. government and defense logistics supply chains.

WHERE IT FITS
MRO→ MRO_GENERAL→ 31-17
NSN: 5307-00-156-1574
FSC: 5307
CAGE: 80254 — TEXTRON LYCOMING INC WILLIAMSPORT PLANT (USA)
SPECIFICATIONS
end_typeEXTERNAL THREAD SECOND END
materialIRON
shell_typeSOLID
power_rating400.0 WATTS PEAK ALL ANTENNAS
overall_width6.9 INCHES NOMINAL IN
pump_quantity1
terminal_typeSOLDER STUD SINGLE MATING END SINGLE CONTACT GROUPING
thread_length0.469 INCHES NOMINAL SECOND END IN
overall_height6.1 INCHES NOMINAL IN
overall_length0.487 INCHES NOMINAL IN
shell_materialCOPPER ALLOY
furnished_itemsINSULATED BUSHING AND LOCKNUT
NSN5307-00-156-1574
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: 31-17 · Multibrackets ⚠ 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 SERIES DESIGNATOR: UNIFIED NATIONAL COARSE (UNC) STUD THREAD
•
THREAD DIRECTION: RIGHT-HAND STUD THREAD
•
THREAD LENGTH: 0.940 INCHES NOMINAL STUD THREAD IN
•
THREAD QUANTITY PER INCH: 24 NUT THREAD
•
NOMINAL THREAD SIZE: 0.312 INCHES NUT THREAD IN
•
HARDNESS RATING: 26.0 ROCKWELL C MINIMUM AND 38.0 ROCKWELL C MAXIMUM
•
MATERIAL DOCUMENT AND CLASSIFICATION: AMS 6300 ASSN STD 1ST MATERIAL RESPONSE OR AMS 6320 ASSN STD 2ND MATERIAL RESPONSE OR AMS 6322 ASSN STD 3RD MATERIAL RESPONSE
TECHNICAL CHARACTERISTICS (FLIS)
THREAD SERIES DESIGNATORUNIFIED NATIONAL COARSE (UNC) STUD THREAD
THREAD DIRECTIONRIGHT-HAND STUD THREAD
THREAD LENGTH0.940 INCHES NOMINAL STUD THREAD IN
THREAD QUANTITY PER INCH24 NUT THREAD
NOMINAL THREAD SIZE0.312 INCHES NUT THREAD IN
HARDNESS RATING26.0 ROCKWELL C MINIMUM AND 38.0 ROCKWELL C MAXIMUM
OVERALL LENGTH2.130 INCHES NOMINAL IN
MATERIAL DOCUMENT AND CLASSIFICATIONAMS 6300 ASSN STD 1ST MATERIAL RESPONSE OR AMS 6320 ASSN STD 2ND MATERIAL RESPONSE OR AMS 6322 ASSN STD 3RD MATERIAL RESPONSE
THREAD QUANTITY PER INCH18 STUD THREAD
MATERIALSTEEL COMP 4037 OR STEEL COMP 8735 OR STEEL COMP 8740
VERIFIED SUBSTITUTES & CROSS-REFERENCES 13
31-17Interchangeable
interchangeable cross-reference
interchangeable
51-052-0000Interchangeable
interchangeable cross-reference
interchangeable
700213Interchangeable
interchangeable cross-reference
interchangeable
J90-0014-001Interchangeable
interchangeable cross-reference
interchangeable
KC-100-ITInterchangeable
interchangeable cross-reference
interchangeable
KC 100 TInterchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 31-17?
31-17 is a RESISTOR,VARIABLE,WIRE WOUND,NON manufactured by Multibrackets. It is classified as a MRO (MRO_GENERAL).
What parts can replace 31-17?
There are 13 known substitutes for 31-17: 31-17, 51-052-0000, 700213 and 10 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 31-17?
31-17 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5307-00-156-1574. 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