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Technical Data Sheet
PartsTable / COMPONENT / 20-690
20-690 ✓ Verified by PartsTable
Exost · 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

VALVE,LINEAR,DIRECTIONAL CONTROL. Key specifications include material: STEEL OVERALL, body_width: 3.125 INCHES NOMINAL IN, head_style: HEADLESS (SETSCREW), point_type: CONVENTIONAL, body_height: 4.000 INCHES NOMINAL IN, body_length: 3.375 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 5305-00-033-2977, 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
20-690
NSN: 5305-00-033-2977
FSC: 5305
CAGE: 58880 — MEGGITT (NEW HAMPSHIRE), INC (USA)
SPECIFICATIONS
materialSTEEL OVERALL
body_width3.125 INCHES NOMINAL IN
head_styleHEADLESS (SETSCREW)
point_typeCONVENTIONAL
body_height4.000 INCHES NOMINAL IN
body_length3.375 INCHES NOMINAL IN
point_angle118.0 DEGREES NOMINAL
point_styleOVAL
shank_styleSTRAIGHT ROUND
flute_length2.000 INCHES NOMINAL IN
thread_class2A A
thread_length0.156 INCHES MINIMUM IN
NSN5305-00-033-2977
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: 20-690 · Exost ⚠ 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
•
MATERIAL DOCUMENT AND CLASSIFICATION: AMS 4610 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
•
MATERIAL: COPPER ALLOY 360 OVERALL
•
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: AMS 2400 ASSN STD SINGLE TREATMENT RESPONSE OVERALL
•
THREAD SERIES DESIGNATOR: UNF
•
THREAD LENGTH: 0.156 INCHES MINIMUM IN
•
NOMINAL THREAD DIAMETER: 0.125 INCHES IN
•
HEAD STYLE: HEADLESS (SETSCREW)
•
THREAD DIRECTION: RIGHT-HAND
TECHNICAL CHARACTERISTICS (FLIS)
MATERIAL DOCUMENT AND CLASSIFICATIONAMS 4610 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
MATERIALCOPPER ALLOY 360 OVERALL
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONAMS 2400 ASSN STD SINGLE TREATMENT RESPONSE OVERALL
THREAD SERIES DESIGNATORUNF
THREAD LENGTH0.156 INCHES MINIMUM IN
NOMINAL THREAD DIAMETER0.125 INCHES IN
HEAD STYLEHEADLESS (SETSCREW)
THREAD DIRECTIONRIGHT-HAND
THREAD QUANTITY PER INCH44
SURFACE TREATMENTCADMIUM OVERALL
VERIFIED SUBSTITUTES & CROSS-REFERENCES 9
20-690Interchangeable
interchangeable cross-reference
interchangeable
918 22Interchangeable
interchangeable cross-reference
interchangeable
2012-T 22Interchangeable
interchangeable cross-reference
interchangeable
1340Interchangeable
interchangeable cross-reference
interchangeable
N1232Interchangeable
interchangeable cross-reference
interchangeable
695680Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 20-690?
20-690 is a VALVE,LINEAR,DIRECTIONAL CONTROL manufactured by Exost.
What parts can replace 20-690?
There are 9 known substitutes for 20-690: 20-690, 918 22, 2012-T 22 and 6 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 20-690?
20-690 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5305-00-033-2977. 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