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Technical Data Sheet
PartsTable / MRO / 16531
16531 ✓ Verified by PartsTable
— · 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

CONNECTOR,RECEPTACLE,ELECTRICAL. Key specifications include color: BLACK, length: 224.0 MILLIMETERS NOMINAL MM, material: RUBBER OVERALL, head_style: HEADLESS (SETSCREW), body_length: 0.810 INCHES MAXIMUM IN, point_style: FLAT. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5305-00-169-9820, 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
MRO→ MRO_GENERAL→ 16531
NSN: 5305-00-169-9820
FSC: 5305
CAGE: 77445 — RTX CORPORATION DBA PRATT & WHITNEY DIV PRATT &WHITNEY (USA)
SPECIFICATIONS
colorBLACK
length224.0 MILLIMETERS NOMINAL MM
materialRUBBER OVERALL
head_styleHEADLESS (SETSCREW)
body_length0.810 INCHES MAXIMUM IN
point_styleFLAT
skirt_styleFLARED
corner_shapeSQUARE ALL CORNERS
skirt_designDETACHABLE
thread_class3A A
hole_quantity12
overall_depth0.500 INCHES NOMINAL IN
NSN5305-00-169-9820
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: 16531 · 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 QUANTITY PER INCH: 32
•
MATERIAL: STEEL COMP 6150 OVERALL
•
FASTENER LENGTH: 0.250 INCHES NOMINAL IN
•
INTERNAL DRIVE STYLE: SLOT
•
THREAD LENGTH: 0.250 INCHES MAXIMUM IN
•
MATERIAL DOCUMENT AND CLASSIFICATION: AMS 6455 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
•
THREAD SERIES DESIGNATOR: UNIFIED NATIONAL COARSE (UNC)
•
THREAD DIRECTION: RIGHT-HAND
TECHNICAL CHARACTERISTICS (FLIS)
THREAD QUANTITY PER INCH32
MATERIALSTEEL COMP 6150 OVERALL
FASTENER LENGTH0.250 INCHES NOMINAL IN
INTERNAL DRIVE STYLESLOT
THREAD LENGTH0.250 INCHES MAXIMUM IN
MATERIAL DOCUMENT AND CLASSIFICATIONAMS 6455 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
THREAD SERIES DESIGNATORUNIFIED NATIONAL COARSE (UNC)
THREAD DIRECTIONRIGHT-HAND
THREAD CLASS3A A
NOMINAL THREAD DIAMETER0.164 INCHES IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 14
S9300-921873PC127Interchangeable
interchangeable cross-reference
interchangeable
16531Interchangeable
interchangeable cross-reference
interchangeable
8499318Interchangeable
interchangeable cross-reference
interchangeable
40005Interchangeable
interchangeable cross-reference
interchangeable
B2024-10Interchangeable
interchangeable cross-reference
interchangeable
EP202420Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 16531?
16531 is a CONNECTOR,RECEPTACLE,ELECTRICAL. It is classified as a MRO (MRO_GENERAL).
What parts can replace 16531?
There are 14 known substitutes for 16531: S9300-921873PC127, 16531, 8499318 and 11 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 16531?
16531 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5305-00-169-9820. 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