THK GC Metal Cap for LM Rail Mounting Holes (M5-M24)

Metal GC caps that seal LM rail mounting-bolt counterbores tightly for harsh, chip- and coolant-laden environments.

Key features

Metal construction (RoHS compliant) with tighter fit than C/CV caps and no gap after insertion
Particularly effective with metal chips, spatter, wood dust and coolant (welders, lathes, machining centers)
Sizes for M5 to M24 rail mounting bolts (GC5-GC24)
Supplied as a set with the LM guide only; 'GC' is appended to the LM guide code (e.g. SVR45LR+1200L GC)
Rail counterbores are specially machined; not available for stainless steel or surface-treated rails

Specifications

Brand	THK
Product	LM rail mounting-hole cap
Material	Metal (RoHS compliant)
Bolt range	M5-M24
Supply	Sold with the LM guide only, not separately
Ordering	Append GC to LM guide model number
Source	THK General Catalog LM Guide (Korean ed. 515-2K), p. A1-569-A1-570

GC5		Bolt: M5 \| D: 9.86 mm \| H: 2.5 mm \| Typical LM guides: SSR/SR20, SVR25, SHS/SCR20, SRG/GSR20
GC6		Bolt: M6 \| D: 11.36 mm \| H: 2.5 mm \| Typical LM guides: SSR/SR25Y/30, SVR30, SHS/SCR25, SHW35
GC8		Bolt: M8 \| D: 14.36 mm \| H: 3.5 mm \| Typical LM guides: SSR/SR35, SHS/SCR30/35, SHW50, SRG30/35
GC10		Bolt: M10 \| D: 17.86 mm \| H: 3.5 mm \| Typical LM guides: SR45, SHW60, SRW70, GSR35, HR3575
GC12		Bolt: M12 \| D: 20.36 mm \| H: 4.6 mm \| Typical LM guides: SR55, SVR45, SHS/SCR45, SRG45, SRW85
GC14		Bolt: M14 \| D: 23.36 mm \| H: 5 mm \| Typical LM guides: SVR55, SHS55, SRG55, SRW100, HRX55
GC16		Bolt: M16 \| D: 26.36 mm \| H: 5 mm \| Typical LM guides: SR70/85, SVR65, SHS/SCR65, SRG65, SRW130
GC22		Bolt: M22 \| D: 35.36 mm \| H: 5 mm \| Typical LM guides: NR85, SHS/HSR85, SRG85, SRW150
GC24		Bolt: M24 \| D: 39.36 mm \| H: 5 mm \| Typical LM guides: SR120, NR100, SHS/HSR100, SRG100

Linear Motion AccessoriesTHK

9 product codes available in this family

Sourced direct from KoreaExport-ready supplyCompetitive pricing

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THK GC Metal Cap for LM Rail Mounting Holes (M5-M24)

Brand THK·Linear Motion Accessories

Available part numbers (9)

GC5, GC6, GC8, GC10, GC12, GC14, GC16, GC22, GC24

How to order

Send the THK part numbers and quantities through our RFQ form or to info@prosourcemro.com. We confirm price, availability and lead time within 1 business day — no account needed.

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THK GC Metal Cap for LM Rail Mounting Holes (M5-M24)