Fastener Products

Product Details

Metal Undercut Anchor
Smart Type SMUS-HL/MUS-HLD

For concrete / Bottom expansion type
  • The rotation and impact force of a hammer drill "enables the anchor to form the hole into a conical shape while expanding ( self-undercutting feature)", achieving accurate bottom expansion result.
  • User can confirm the installation process visually to ensure installation reliability.
  • Due to the small diameter and short drilling depth, user can also use this anchor where the base material thickness is thin.
  • Since bottom expansion can be done by a lightweight hammer drill, it is ideal for upward installation. Workability is also good even in narrow workspaces.
  • Comes with NAS3350 standard "Hard Lock® Nut" that is strong against loosening.
  • In addition to regular installation, it is also possible to use a filler material in the pilot hole to prevent deterioration of the base material.
［Application］
Equipment, Lighting Installation, etc.

＊”Hard Lock®” is a registered trademark of Hard Lock Industry.

❶Drill a hole
❷Clean the dust
❸Insert the anchor
❹Bottom expansion
※Use a hammer drill with at least 800W power consumption and min. φ26mm drilling capability.
※After bottom expansion, rattling may occur.
❺Installation complete
※Installation complete by tightening the nut.
・Suggested installation torque for Hard Lock® Nut
Stainless Steel
Thread Installation torque
N・m
Convex nut Concave nut※
M8 12 9～13
M10 25 18～24
M12 43 27～39
・Installation torque for concave nut (Min.~Max.)
Steel / Hot-Dip Galvanizing
Thread Installation torque
N・m
Convex nut Concave nut※
M8 12 13.5～19.5
M10 25 27～36
M12 43 40.5～58.5
・Installation torque for concave nut (Min.~Max.)

● Be sure to check the manual before installation.
● Be sure to use the designated tool for installation.

SMUS-HL Type

強度表をPDFで開く
Unit：mm Unit：kN
Thread Anchor
diameter		 Embed. depth Max. load
Tensile strength Shear strength
M8 14.0 49.0 19.0 10.9
M10 16.0 54.0 30.2 17.4
M12 18.0 58.0 34.8 25.3
・Fc=21N/mm2 concrete

MUS-HLD Type

強度表をPDFで開く
Unit：mm Unit：kN
Thread Anchor
diameter		 Embed. depth Max. load
Tensile strength Shear strength
M8 14.0 49.0 18.3 10.5
M10 16.0 54.0 29.0 16.7
M12 18.0 58.0 35.5 24.3
・Fc=21N/mm2 concrete

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※Set the components with the designated setting tool
Suitable for Item no.
MUS-HLD/SMUS-HL
M8～M12		 MUS-MHCUPSET

SMUS-HL TYPE: STAINLESS STEEL SUS304
サイズ表をPDFで開く

Unit：mm Unit：pc
Thread Item no. D L ℓ Embed.
depth ※１		 Max. fixture
thickness ※２		 Drilling
diameter		 Drilling
depth		 Bottom
expansion
diameter		 Bolt
protruding
length		 Nut width across flat Qty・per
Box Carton
M8 SMUS-890HL 14.0 90 50 49.0 8 15.0 58 17 27 13 10 80
M10 SMUS-10100HL 16.0 100 55 54.0 9 17.0 65 20 32 17 10 80
M12 SMUS-12120HL 18.0 120 60 58.0 18 19.0 72 22 45 19 10 80
MUS-HLD TYPE: STEEL / HOT-DIP GALVANIZING
サイズ表をPDFで開く

Unit：mm Unit：pc
Thread Item no. D L ℓ Embed.
depth ※１		 Max. fixture
thickness ※２		 Drilling
diameter		 Drilling
depth		 Bottom
expansion
diameter		 Bolt
protruding
length		 Nut width across flat Qty・per
Box Carton
M8 MUS-890HLD 14.0 90 50 49.0 8 15.0 58 17 27 13 10 80
M10 MUS-10100HLD 16.0 100 55 54.0 9 17.0 65 20 32 17 10 80
M12 MUS-12120HLD 18.0 120 60 58.0 18 19.0 72 22 45 19 10 80
※１The effective embed. length is the embed. length for calculating the strength of the anchor bolt, and is the length from the base material surface after bottom expansion to the tip of the bottom expansion (diameter expansion) part.
※２Values ​​when 3 threads are exposed after installation.

【Drilling】
Drill bit with a stopper [MUC-SDS Type]
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【Hammering】
Designated setting tool [MUC-MH-SDS Type]
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