PartsTable
Technical Data Sheet
PartsTable / COMPONENT / 83-00138
83-00138 ✓ 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,MACHINE is a the manufacturer industrial component. Key specifications include head_style: PAN NO. 2, head_height: 0.085 INCHES MINIMUM AND 0.096 INCHES MAXIMUM IN, thread_class: 2A A, head_diameter: 0.306 INCHES MINIMUM AND 0.322 INCHES MAXIMUM IN, thread_length: 0.240 INCHES MINIMUM AND 0.260 INCHES MAXIMUM IN, screw_material: STEEL.

This product is currently in active production with full OEM support. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5305-01-242-5951, 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
83-00138
NSN: 5305-01-242-5951
FSC: 5305
CAGE: U5012 — COUNTRYMAN GROUP LTD (GBR)
SPECIFICATIONS
head_stylePAN NO. 2
head_height0.085 INCHES MINIMUM AND 0.096 INCHES MAXIMUM IN
thread_class2A A
head_diameter0.306 INCHES MINIMUM AND 0.322 INCHES MAXIMUM IN
thread_length0.240 INCHES MINIMUM AND 0.260 INCHES MAXIMUM IN
screw_materialSTEEL
fastener_length0.240 INCHES MINIMUM AND 0.260 INCHES MAXIMUM IN
thread_directionRIGHT-HAND
internal_drive_styleSLOT
nominal_thread_diameter0.164 INCHES IN
screw_surface_treatmentZINC
thread_quantity_per_inch32
NSN5305-01-242-5951
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: 83-00138 · 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
•
SCREW MATERIAL: STEEL
•
HEAD STYLE: PAN NO. 2
•
THREAD SERIES DESIGNATOR: UNIFIED NATIONAL COARSE (UNC)
•
NOMINAL THREAD DIAMETER: 0.164 INCHES IN
•
THREAD QUANTITY PER INCH: 32
•
THREAD CLASS: 2A A
•
HEAD HEIGHT: 0.085 INCHES MINIMUM AND 0.096 INCHES MAXIMUM IN
•
THREAD LENGTH: 0.240 INCHES MINIMUM AND 0.260 INCHES MAXIMUM IN
TECHNICAL CHARACTERISTICS (FLIS)
SCREW MATERIALSTEEL
HEAD STYLEPAN NO. 2
THREAD SERIES DESIGNATORUNIFIED NATIONAL COARSE (UNC)
NOMINAL THREAD DIAMETER0.164 INCHES IN
THREAD QUANTITY PER INCH32
THREAD CLASS2A A
HEAD HEIGHT0.085 INCHES MINIMUM AND 0.096 INCHES MAXIMUM IN
THREAD LENGTH0.240 INCHES MINIMUM AND 0.260 INCHES MAXIMUM IN
THREAD DIRECTIONRIGHT-HAND
FASTENER LENGTH0.240 INCHES MINIMUM AND 0.260 INCHES MAXIMUM IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 12
278-1784-00Interchangeable
interchangeable cross-reference
interchangeable
278-1784-000Interchangeable
interchangeable cross-reference
interchangeable
18346Interchangeable
interchangeable cross-reference
interchangeable
305734Interchangeable
interchangeable cross-reference
interchangeable
X518Interchangeable
interchangeable cross-reference
interchangeable
291672Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
Ready to buy 83-00138?
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 83-00138?
83-00138 is a SCREW,MACHINE.
What parts can replace 83-00138?
There are 12 known substitutes for 83-00138: 278-1784-00, 278-1784-000, 18346 and 9 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 83-00138?
83-00138 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5305-01-242-5951. 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 — 83-00138

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