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PartsTable / COMPONENT / 170916-78385
170916-78385 ✓ 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,ASSEMBLED WASHER is a the manufacturer industrial component. Key specifications include material: STEEL OVERALL, head_style: PAN, head_height: 0.105 INCHES NOMINAL IN, thread_class: 2A A, head_diameter: 0.365 INCHES NOMINAL IN, thread_length: 0.313 INCHES MINIMUM IN. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5305-00-974-3917, 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
170916-78385
NSN: 5305-00-974-3917
FSC: 5305
CAGE: 19422 — DEMARKUS CORP REFRIGERATION ENGINEERING CORP (USA)
SPECIFICATIONS
materialSTEEL OVERALL
head_stylePAN
head_height0.105 INCHES NOMINAL IN
thread_class2A A
head_diameter0.365 INCHES NOMINAL IN
thread_length0.313 INCHES MINIMUM IN
fastener_length0.375 INCHES MINIMUM IN
washer_quantity1
thread_directionRIGHT-HAND
surface_treatmentCADMIUM OVERALL
internal_drive_styleSLOT
primary_washer_styleFLAT EXTERNAL TEETH
NSN5305-00-974-3917
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: 170916-78385 · 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
•
PRIMARY WASHER MATERIAL THICKNESS: 0.018 INCHES MINIMUM AND 0.024 INCHES MAXIMUM IN
•
FASTENER LENGTH: 0.375 INCHES MINIMUM IN
•
HEAD DIAMETER: 0.365 INCHES NOMINAL IN
•
NOMINAL THREAD DIAMETER: 0.190 INCHES IN
•
THREAD SERIES DESIGNATOR: UNF
•
MATERIAL: STEEL OVERALL
•
HEAD HEIGHT: 0.105 INCHES NOMINAL IN
•
SURFACE TREATMENT: CADMIUM OVERALL
TECHNICAL CHARACTERISTICS (FLIS)
PRIMARY WASHER MATERIAL THICKNESS0.018 INCHES MINIMUM AND 0.024 INCHES MAXIMUM IN
FASTENER LENGTH0.375 INCHES MINIMUM IN
HEAD DIAMETER0.365 INCHES NOMINAL IN
NOMINAL THREAD DIAMETER0.190 INCHES IN
THREAD SERIES DESIGNATORUNF
MATERIALSTEEL OVERALL
HEAD HEIGHT0.105 INCHES NOMINAL IN
SURFACE TREATMENTCADMIUM OVERALL
WASHER QUANTITY1
THREAD LENGTH0.313 INCHES MINIMUM IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 3
EX170-9-16Interchangeable
interchangeable cross-reference
interchangeable
GGG-B-001013 TY1Interchangeable
interchangeable cross-reference
interchangeable
NAS1079-9/16Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 170916-78385?
170916-78385 is a SCREW,ASSEMBLED WASHER.
What parts can replace 170916-78385?
There are 3 known substitutes for 170916-78385: EX170-9-16, GGG-B-001013 TY1, NAS1079-9/16. Substitute compatibility should be verified for your specific system.
What is the NSN for 170916-78385?
170916-78385 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5305-00-974-3917. 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