PartsTable
Technical Data Sheet
PartsTable / COMPONENT / 188C1797
188C1797 ✓ 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 head_style: FLAT CHAMFER, head_height: 0.250 INCHES NOMINAL IN, thread_class: 2A A, head_diameter: 0.625 INCHES NOMINAL IN, shoulder_shape: ROUND FIRST SHOULDER, fastener_length: 0.625 INCHES NOMINAL 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 5305-01-219-5941, 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
188C1797
NSN: 5305-01-219-5941
FSC: 5305
CAGE: 89954 — BAE SYSTEMS CONTROLS INC. (USA)
SPECIFICATIONS
head_styleFLAT CHAMFER
head_height0.250 INCHES NOMINAL IN
thread_class2A A
head_diameter0.625 INCHES NOMINAL IN
shoulder_shapeROUND FIRST SHOULDER
fastener_length0.625 INCHES NOMINAL IN
shoulder_length0.132 INCHES MINIMUM AND 0.138 INCHES MAXIMUM FIRST SHOULDER IN
thread_directionRIGHT-HAND
shoulder_diameter0.375 INCHES NOMINAL FIRST SHOULDER IN
internal_drive_styleSLOT
nominal_thread_diameter0.312 INCHES IN
thread_quantity_per_inch18
NSN5305-01-219-5941
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: 188C1797 · 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
•
NOMINAL THREAD DIAMETER: 0.312 INCHES IN
•
THREAD SERIES DESIGNATOR: UNIFIED NATIONAL COARSE (UNC)
•
INTERNAL DRIVE STYLE: SLOT
•
SHOULDER DIAMETER: 0.375 INCHES NOMINAL FIRST SHOULDER IN
•
FASTENER LENGTH: 0.625 INCHES NOMINAL IN
•
HEAD DIAMETER: 0.625 INCHES NOMINAL IN
•
THREAD QUANTITY PER INCH: 18
•
THREAD CLASS: 2A A
TECHNICAL CHARACTERISTICS (FLIS)
NOMINAL THREAD DIAMETER0.312 INCHES IN
THREAD SERIES DESIGNATORUNIFIED NATIONAL COARSE (UNC)
INTERNAL DRIVE STYLESLOT
SHOULDER DIAMETER0.375 INCHES NOMINAL FIRST SHOULDER IN
FASTENER LENGTH0.625 INCHES NOMINAL IN
HEAD DIAMETER0.625 INCHES NOMINAL IN
THREAD QUANTITY PER INCH18
THREAD CLASS2A A
SHOULDER SHAPEROUND FIRST SHOULDER
THREAD DIRECTIONRIGHT-HAND
VERIFIED SUBSTITUTES & CROSS-REFERENCES 17
219404Interchangeable
interchangeable cross-reference
interchangeable
39256CInterchangeable
interchangeable cross-reference
interchangeable
PC212PInterchangeable
interchangeable cross-reference
interchangeable
2163EZInterchangeable
interchangeable cross-reference
interchangeable
571Interchangeable
interchangeable cross-reference
interchangeable
635Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
Ready to buy 188C1797?
Compare prices from verified sellers on eBay
Buy on eBay →
As an eBay Partner, PartsTable may earn a commission. Your price is not affected.
FREQUENTLY ASKED QUESTIONS
What is 188C1797?
188C1797 is a SCREW,SHOULDER.
What parts can replace 188C1797?
There are 17 known substitutes for 188C1797: 219404, 39256C, PC212P and 14 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 188C1797?
188C1797 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5305-01-219-5941. This indicates validated use in U.S. government and defense supply chains.
Community Feedback
Comments (0)
No comments yet. Be the first to share what you know.
Leave a Comment
Comments are reviewed before appearing. You will receive an email to verify before your comment appears.

Request a Quote — 188C1797

✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026