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PartsTable / COMPONENT / ESP-B-2'121-PP
ESP-B-2'121-PP ✓ 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 ESP-B-2'121-PP is a the manufacturer industrial component. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5306-01-556-6622, 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
ESP-B-2'121-PP
NSN: 5306-01-556-6622
FSC: 5306
CAGE: 338X5 — ND DEFENSE LLC (USA)
SPECIFICATIONS
Part NumberESP-B-2'121-PP
NSN5306-01-556-6622
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: ESP-B-2'121-PP · 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
TECHNICAL CHARACTERISTICS (FLIS)
PART NAME ASSIGNED BY CONTROLLING AGENCYBOLT,HH 5/16-18X3/4 PHC TYP 8
END ITEM IDENTIFICATIONMRAP - COMMON NSN - USED ON MAXXPRO CAT I AND 1 OTHER WEAPON SYSTEM
VERIFIED SUBSTITUTES & CROSS-REFERENCES 12
ESP-B-1.101-GSUpgraded Successor
successor cross-reference
successor
TMS-4523Upgraded Successor
successor cross-reference
successor
12484861-059Upgraded Successor
successor cross-reference
successor
NB3136PC881Interchangeable
interchangeable cross-reference
interchangeable
180075Interchangeable
interchangeable cross-reference
interchangeable
43796AXInterchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is ESP-B-2'121-PP?
ESP-B-2'121-PP is a ESP-B-2'121-PP.
What parts can replace ESP-B-2'121-PP?
There are 12 known substitutes for ESP-B-2'121-PP: ESP-B-1.101-GS, TMS-4523, 12484861-059 and 9 more. Substitute compatibility should be verified for your specific system.
Is ESP-B-2'121-PP still available?
ESP-B-2'121-PP is currently cancelled.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026