CASE CONSTRUCTION OEM Part No. R57375

Square Nut

Case Construction ·42 Fitments

$2.45 USD · per unit In stock · 1184 on hand
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Machine Model Years
CASE CRAWLER EXCAVATOR (NORTH AMERICA) 125B 1988 – 1989
CASE IH AXIAL-FLOW COMBINE (S/N JJC0045689 & AFTER) (NORTH AMERICA) 1680 1989 – 1992
CASE IH AXIAL-FLOW COMBINE 1688 1993 – 1994
CASE IH AXIAL-FLOW COMBINE (NA) 2188 1995 – 1997
CASE IH AXIAL-FLOW COMBINE (NA) BSN JJC0276540 2388 1997 – 2004
CASE IH AXIAL-FLOW COMBINE (NA) BTW HAJ292001 & HAJ300000 2388 1998 – 2007
CASE IH AXIAL-FLOW COMBINE (NA) ASN HAJ300001 2588 2006
DROTT SERIES-D CRAWLER EXCAVATOR (S/N 6266131 & AFTER) 35 1977 – 1981
CASE LONG TRACK CRAWLER TRACTOR 550 1989 – 1991
CASE LONG TRACK CRAWLER TRACTOR 550E 1992 – 1994

OEM Case Construction Square Nut #R57375 ? Lock Fasteners with OEM Square Nut Strength

This Square Nut (#R57375) secures bolts in Case assemblies. OEM threading and shape offer strong grip, especially in slots or recessed channels.

More Details

Part Number: R57375
Application: Structural and mechanical fastening

Key Features:

  • OEM-matched thread pitch
  • Durable material with rust-resistant coating
  • Compatible with carriage bolts and brackets

Fits Case Models: Confirm bolt size and mounting location.

Compatible equipment

This part fits CASE CRAWLER EXCAVATOR (NORTH AMERICA), CASE IH AXIAL-FLOW COMBINE (S/N JJC0045689 & AFTER) (NORTH AMERICA), CASE IH AXIAL-FLOW COMBINE, CASE IH AXIAL-FLOW COMBINE (NA), CASE IH AXIAL-FLOW COMBINE (NA) BSN JJC0276540, CASE IH AXIAL-FLOW COMBINE (NA) BTW HAJ292001 & HAJ300000, CASE IH AXIAL-FLOW COMBINE (NA) ASN HAJ300001, DROTT SERIES-D CRAWLER EXCAVATOR (S/N 6266131 & AFTER), CASE LONG TRACK CRAWLER TRACTOR, CASE CRAWLER TRACTOR, IND - CASE CRAWLER TRACTOR, CRAWLER DOZER TIER 3 (HYDRO), CASE CRAWLER EXCAVATOR (PRIOR TO S/N CGG0011601), CASE CRAWLER EXCAVATOR (S/N CGG0011601 & AFTER), CASE CRAWLER EXCAVATOR (S/N 120301 & AFTER), CASE CRAWLER EXCAVATOR (S/N 10501 & AFTER), POCLAIN CRAWLER EXCAVATOR, CASE CRAWLER EXCAVATOR, CASE CRAWLER EXCAVATOR (S/N 15401-) (S/N 106801-), CASE CRAWLER EXCAVATOR (S/N 74163-74418) (S/N 15201-), CASE TURNTABLE LEVELER CRAWLER EXCAVATOR, CASE/POCLAIN CRAWLER EXCAVATOR (S/N 9501 & AFTER), CRAWLER DOZER TIER 3, POCLAIN CRAWLER EXCAVATOR (NORTH AMERICA) including models 125B, 1680, 1688, 2188, 2388, 2588, 35, 550, 550E, 550G, 550H, 650, 650G, 650L, 688, 688BCK, 688C, 75C, 850B, 850C, 850D, 850E, 850G, 855C, 855D.

Frequently asked questions

What is the part number?

The manufacturer part number is R57375.

Is this a genuine OEM part?

Yes. Southeastern Equipment stocks OEM and quality aftermarket parts for heavy equipment. Contact us if you need a specific OEM source or aftermarket option.

Will this fit my machine?

See the compatible equipment list above. If your model is not listed, call us with your machine's serial number and we can confirm.

Where does this ship from?

Southeastern Equipment Company ships parts nationwide from our US warehouse. Orders placed before 2 PM ET typically ship same day.

Manufacturer part number
R57375
Internal SKU
IC:R57375
Brand
CASE CONSTRUCTION
Condition
OEM, new
Category
Case Construction
Weight
0.09 lb

Free pickup at any of our 17 branches across Ohio, Indiana, Michigan, and Kentucky. Select your preferred branch at checkout.

30-day no-fault returns. Bought the wrong part? Send it back for a full refund — no restocking fees, no minimums.

This part appears in these diagrams

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