Hex Socket Head Bolt Grade 5 5/8in-18 X 1 1/2in

Enhance your heavy equipment’s performance with the Case Construction Hex Socket Head Bolt – Grade 5. Measuring 5/8in-18 x 1 1/2in, this durable bolt ensures reliable fastening for demanding applications in the construction industry. Perfect for maintenance and repairs.

Compatible equipment

This part fits CASE FORKLIFT, CASE CRAWLER EXCAVATOR, CASE CRUZ-AIR WHEELED EXCAVATOR, CASE CRAWLER EXCAVATOR - DUAL POWER ELECTRIC & DIESEL ENGINE, CASE LONG TRACK/TURNABLE LEVELER CRAWLER EXCAVATOR, CASE CRAWLER TRACTOR, CASE LOGGER CRAWLER EXCAVATOR, COMPACT WHEEL LOADER TIER 3, SERIES - CASE UNI-LOADER SKID STEER LOADER, CASE UNI-LOADER SKID STEER LOADER, CASE UNI-LOADER SKID STEER LOADER W/DEUTZ ENGINE, CRAWLER DOZER TIER 2, CRAWLER DOZER, SMALL WHEEL LOADER, BACKHOE, CASE SKID KING WHEEL LOADER, BACKHOE FOR W7, W9A, W9B, W10, BACKHOE FOR 310G AND 450 CRAWLER, DROTT ENGINES FOR 35 CRAWLER - B SERIES, CASE ENGINE, BACKHOE FOR CRAWLER MODELS 750, 850, 1150, BACKHOE FOR W SERIES RIGID LOADERS, BACKHOES FOR CRAWLER MODELS 750, 850, 1150, BACKHOE FOR 450, 450B, 850, 850B, AND W14, CASE SKID STEER LOADER, CASE LONG TRACK CRAWLER TRACTOR, CASE CONSTRUCTION KING LOADER BACKHOE, CASE TERRATRAC CRAWLER TRACTOR, WHEEL LOADER STD LINKAGE - STAGE V - 2025 UPDATES, WHEEL LOADER XT LINKAGE - STAGE V - 2025 UPDATES, WHEEL LOADER - STAGE V - TS - XT, WHEEL LOADER - STAGE V - TS - ZBAR, WHEEL LOADER - T4B - STD LINKAGE, WHEEL LOADER - T4B - XR LINKAGE, WHEEL LOADER - T4B - XT LINKAGE, IND - CASE CRAWLER TRACTOR, LOADER LANDSCAPER, SERIES 2 LOADER BACKHOE - ASN JJG0239360, CASE SUPER-E CONSTRUCTION KING LOADER BACKHOE, CASE SUPER-K CONSTRUCTION KING LOADER BACKHOE, LOADER BACKHOE - BSN JJG0239361, CASE CONSTRUCTION KING FORKLIFT, TURBO LOADER BACKHOE, LOADER BACKHOE, SERIES 2 LOADER BACKHOE - ASN JJG0210575, CASE TERRATRAC GASOLINE CRAWLER TRACTOR, CASE TURBO HORIZONTAL DIRECTIONAL DRILLING MACHINE, CASE WHEEL LOADER, SERIES 1 CRAWLER - 07/01/2002 - 01/31/2005, CASE TRENCHER, CASE SERIES-2 TELESCOPIC HANDLER, CASE TELESCOPIC HANDLER, CASE TIER-2 TELESCOPIC HANDLER, WHEEL LOADER TIER 3 NA/EU, CASE TURBO TRENCHER, CASE TURNTABLE LEVELER CRAWLER EXCAVATOR, CASE EXCAVATOR - TILTING TOOL ATTACHMENT W/QUICK COUPLER, FLEETLINE 25+4 TRENCHER, CASE UNIT LOADER, CASE WHEEL LOADER W/POD CAB - NEW YORK STATE SPECIAL, CASE ARTICULATED WHEEL LOADER including models 586G, 588G, 1080, 1080B, 1085B, 1085C, 1086B, 1088, 1150B, 1150D, 1150E, 1150G, 1150H, 1155D, 1155E, 1187, 1187B, 121E SERIES 3, 1280, 1280B, 1450, 1450B, 1455B, 1500, 1529.

Frequently asked questions

What is the part number?

The manufacturer part number is 88112.

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.

Ships nationwide. In-stock parts ordered before 2:30 PM ET ship the same business day. Your exact shipping cost and delivery estimate are calculated at checkout from your ZIP code and the part’s size and weight; oversized and truck-freight items may need extra transit time and freight charges.

Free branch pickup is also available across Ohio, Indiana, Michigan, and Kentucky — just choose it at checkout.

30-day returns. New, unused parts in original packaging may be returned within 30 days. Some items — including electrical, special-order, and direct-from-supplier parts — are non-returnable. See our full return policy.