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Modular Fixturing Category
Standard System MF40 (1/2") Line
Modular Clamps (Standard) Type
Downthrust Backstops (Standard) Model

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Downthrust Backstops (Standard)

Modular Fixturing

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These backstops retract slightly back and downward as clamping force is applied, exerting downthrust force on the workpiece. Serrated jaw for secure gripping. Use when precise horizontal location is not required. Replacement jaw inserts are available.

The backstop shown here is the smaller of two sizes, with 1/2-13 mounting screws for Standard MF40 modular systems. Fasten with four Socket-head Cap Screws (order separately below).

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Application Information

Material

ITEM	MATERIAL	HEAT TREAT	FINISH	DFARS	RoHS
Body	Gray Cast Iron	-	ASTM class 40, black oxide finish	✔	✔
Jaw	1045 Steel	heat treated Rc 40-45	Black Oxide	✔	✔

Click here for detailed material and finish specifications.

California residents click here for Prop 65 information.

Downthrust Backstops (Standard)

QUANTITY	PART NO.	MOUNTING-SCREW SIZE
	CL-MF40-1101	1/2-13

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Socket-Head Cap Screws Required for Mounting

QUANTITY	PART NO.	FITS DOWNTHRUST BACKSTOP	QUANTITY REQUIRED
	CL-1/2-13x2.25-SHCS	CL-MF40-1101	4

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Replacement Jaw Insert

QUANTITY	PART NO.	FITS DOWNTHRUST BACKSTOP
	CL-MF40-1111	CL-MF40-1101

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CARR LANE MANUFACTURING
4200 CARR LANE CT.
P.O. BOX 191970
ST. LOUIS, MO 63119
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