PartsTable
Technical Data Sheet
PartsTable / MRO / 573B
573B ✓ Verified by PartsTable
— · MRO · MRO_GENERAL
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

CAPACITOR,FIXED,PLASTIC DIELECTR. Key specifications include head_style: KNURLED NO. 1, head_height: 0.088 INCHES MINIMUM AND 0.098 INCHES MAXIMUM IN, point_style: FLAT, thread_class: 1A A, head_diameter: 0.182 INCHES MINIMUM AND 0.192 INCHES MAXIMUM IN, thread_length: 0.437 INCHES MINIMUM AND 0.447 INCHES MAXIMUM 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 5305-00-113-3764, 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
MRO→ MRO_GENERAL→ 573B
NSN: 5305-00-113-3764
FSC: 5305
CAGE: 80138 — KAY ELEMETRICS CORPORATION (USA)
SPECIFICATIONS
head_styleKNURLED NO. 1
head_height0.088 INCHES MINIMUM AND 0.098 INCHES MAXIMUM IN
point_styleFLAT
thread_class1A A
head_diameter0.182 INCHES MINIMUM AND 0.192 INCHES MAXIMUM IN
thread_length0.437 INCHES MINIMUM AND 0.447 INCHES MAXIMUM IN
shoulder_shapeROUND FIRST SHOULDER
fastener_length0.496 INCHES MINIMUM AND 0.506 INCHES MAXIMUM IN
shoulder_length0.027 INCHES MINIMUM AND 0.037 INCHES MAXIMUM FIRST SHOULDER IN
reliability_indicatorNOT ESTABLISHED
NSN5305-00-113-3764
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: 573B · 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
•
THREAD CLASS: 1A A
•
HEAD DIAMETER: 0.182 INCHES MINIMUM AND 0.192 INCHES MAXIMUM IN
•
POINT STYLE: FLAT
•
THREAD LENGTH: 0.437 INCHES MINIMUM AND 0.447 INCHES MAXIMUM IN
•
SHOULDER SHAPE: ROUND FIRST SHOULDER
•
SHOULDER LENGTH: 0.027 INCHES MINIMUM AND 0.037 INCHES MAXIMUM FIRST SHOULDER IN
•
HEAD STYLE: KNURLED NO. 1
•
HEAD HEIGHT: 0.088 INCHES MINIMUM AND 0.098 INCHES MAXIMUM IN
TYPICAL APPLICATIONS
  • RAID cache protection during power loss events
  • Write-back cache enablement for storage controllers
  • Enterprise server data integrity assurance
  • Hot-swap battery/capacitor replacement in production
TECHNICAL CHARACTERISTICS (FLIS)
THREAD CLASS1A A
HEAD DIAMETER0.182 INCHES MINIMUM AND 0.192 INCHES MAXIMUM IN
POINT STYLEFLAT
THREAD LENGTH0.437 INCHES MINIMUM AND 0.447 INCHES MAXIMUM IN
SHOULDER SHAPEROUND FIRST SHOULDER
SHOULDER LENGTH0.027 INCHES MINIMUM AND 0.037 INCHES MAXIMUM FIRST SHOULDER IN
HEAD STYLEKNURLED NO. 1
HEAD HEIGHT0.088 INCHES MINIMUM AND 0.098 INCHES MAXIMUM IN
FASTENER LENGTH0.496 INCHES MINIMUM AND 0.506 INCHES MAXIMUM IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 8
573BInterchangeable
interchangeable cross-reference
interchangeable
573BCAPACIT0RInterchangeable
interchangeable cross-reference
interchangeable
573AInterchangeable
interchangeable cross-reference
interchangeable
573ACAPACIT0RInterchangeable
interchangeable cross-reference
interchangeable
43AInterchangeable
interchangeable cross-reference
interchangeable
11RB24Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 573B?
573B is a CAPACITOR,FIXED,PLASTIC DIELECTR. It is classified as a MRO (MRO_GENERAL).
What parts can replace 573B?
There are 8 known substitutes for 573B: 573B, 573BCAPACIT0R, 573A and 5 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 573B?
573B is cataloged in the Federal Logistics Information System (FLIS) under NSN 5305-00-113-3764. 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