Magna-Grip

Grade 2 Fasteners that resist loosening

Widely known as the most reliable wide grip fastening system there is - Huck Magna-Grip fasteners also provide vibration resistance and high uniform installed values. The Magna Grip is available in the head styles listed in the diagram below:


Dimensional Data – Button Head

Dia. (No.) Grip
Number
Grip Range Hole Size
Max
A B C D +.025 -.000 a ref d ref
3/16 10 .062 - .625 .203 .183-.187 .356-.394 .113-.125 1.788 .191-.195 .103-.125
(6) 20 .312 - 1.250 .203 .183-.187 .356-.394 .113-.125 2.730 .191-.195 .304-.320
1/4 10 .062 - .625 .265 .245-.249 .475-.525 .136-.152 1.965 .250-.259 .109-.141
(8) 20 .312 - 1.250 .265 .245-.249 .475-.525 .136-.152 2.560 .250-.259 .295-.329
5/16 12 .125 - .750 .328 .307-.311 .594-.656 .181-.201 2.340 .274-.283 .251-Max.
(10) 22 .625 - 1.375 .328 .307-.311 .594-.656 .181-.201 2.840 .317-.322 .533-.567
3/8 14 .125 - .875 .390 .369-.375 .713-.787 .223-.248 2.875 .380-.385 .172-.204
(12) 26 .812 - 1.625 .390 .369-.375 .713-.787 .223-.248 3.500 .380-.385 .794-.826



Dimensional Data – Truss Head

Dia. (No.) Grip
Number
Grip Range Hole Size
Max
A B C D +.025 -.000 a ref d ref
1/4 10 .062 - .625 .265 .245-.249 .531-.594 .103-.115 1.965 .250-.259 .109-.141
(8) 20 .312 - 1.250 .265 .245-.249 .531-.594 .103-.115 2.560 .250-.259 .295-.329
5/16 12 .125 - .750 .328 .307-.311 .703-.797 .127-.141 2.340 .274-.283 .251-Max.
(10) 22 .625 - 1.375 .328 .307-.311 .703-.797 .127-.141 2.840 .317-.322 .533-.567
3/8 14 .125 - .875 .390 .369-.375 .828-.922 .152-.168 2.875 .380-.385 .172-.204
(12) 26 .812 - 1.625 .390 .369-.375 .828-.922 .190-.200 3.500 .380-.385 .794-.826



Dimensional Data – Broad Truss Head

Dia. (No.) Grip
Number
Grip Range Hole Size
Max
A B C D +.025 -.000 a ref d ref
1/4 10 .062 - .625 .265 .245-.249 Steel .937
Aluminum 1.063
.138-.162 1.965 .250-.259 .109-.141
(8) 24 .625 - 1.50 .265 .245-.249 Steel .937
Aluminum 1.063
.138-.162 2.810 .250-.259 .546-.578
3/8 24 .625 - 1.50 .390 .369-.375 1.188-1.250 .188-.212 3.375 .380-.385 .664-.696
(12) 32 1.125 - 2.00 .390 .369-.375 1.188-1.250 .188-.212 3.875 .380-.385 1.164-1.196



Dimensional Data – 90° Flush Head

Dia. (No.) Grip
Number
Grip Range Hole Size
Max
A B C D +.025 -.000 a ref d ref
3/16 10 .062 - .625 .203 .183-.187 .323-.359 .092-.102 1.788 .191-.195 .109-.141
(6) 20 .312 -1.250 .203 .183-.187 .323-.359 .076-.087 2.370 .191-.195 .295-.329
1/4 10 .062 -.625 .265 .245-.249 .433-.478 .119-.128 1.965 .217-.226 .141-.181
(8) 20 .312 -1.250 .265 .245-.249 .433-.478 .102-.115 2.560 .250-.259 .295-.329
5/16 12 .125 -.750 .328 .307-.311 .542-.594 .149-.162 2.340 .275-.280 .166-.206
(10) 22 .625 -1.375 .328 .307-.311 .542-.594 .129-.142 2.840 .317-.322 .559-.591
3/8 14 .250 -.875 .390 .369-.375 .651-.714 .178-.195 2.875 .337-.342 .229-.269
(12) 26 .812 -1.625 .390 .369-.375 .651-.714 .153-.170 3.500 .380-.385 .380-.385

1 "d" dimension is not applicable to short grip parts




Dimensional Data – Rivet Head

Dia. (No.) Grip
Number
Grip Range Hole Size
Max
A B C D +.025 -.000 a ref d ref
3/16 10 .062 - .625 .203 .183-.187 .450-.488 .91-.105 1.801 .189-.196 .078-.096
(6) 20 .312 - 1.250 .203 .183-.187 .450-.488 .91-.105 2.383 .189-.196 .303-.321


Installed Values in Nominal Grip (lbs.)

Aluminum Steel
3/16 Shear 750 1725
Tensile 900 1400
Clamp 550 925
1/4 Shear 1200 2200
Tensile 1620 2550
Clamp 950 200
5/16 Shear 2200 3000
Tensile 2500 3910
Clamp 1600 2150
3/8 Shear 3000 4200
Tensile 4000 5625
Clamp 2400 3200



Collar Dimensions

Collar Diameter F G H J K
MGC 3/16 .307-.313 .189-.195 .265-.285 .040-.052 .365-.385
1/4 .399-.405 .250-.260 .360-.390 .055-.070 .480-.520
5/16 .501-.509 .312-.320 .430-.446 .069-.086 .605-.645
3/8 .603-.611 .376-.384 .490-.520 .086-.100 .730-770
MGCS 3/16 .308-.315 .189-.195 .290-.320 .085-.115 .495-.535
MGCW 3/16 .307-.314 .189-.195 .290-.320 .090-.115 .640-.754
1/4 .399-.405 .250-.260 .432-.462 .115-.145 .855-1.00


Installation Tooling

Dia. Installation Tooling Nose Assembly Type Use
3/16 230 99-3201 Pneudraulic Maintenance & Repair
2025 99-3201 Pneudraulic Maintenance & Repair
212 99-3201 Pneudraulic Production
245 99-3206 Pneudraulic Production
246 99-3206 Pneudraulic Production
2480 99-3201 Hydraulic Production
2580 99-3206 Hydraulic Production
1/4 230 99-3204 Pneudraulic Maintenance & Repair
2025 99-3204 Pneudraulic Maintenance & Repair
212 99-3204 Pneudraulic Production
245 99-3207 Pneudraulic Production
246 99-3207 Pneudraulic Production
2480 99-3204 Hydraulic Production
2580 99-3207 Hydraulic Production
5/16 245 99-1439 Pneudraulic Production
246 99-1439 Pneudraulic Production
2580 99-1439 Hydraulic Production
2600 99-3217 Pneudraulic Production
3/8 245* 99-1440 Pneudraulic Production
246 99-1440 Pneudraulic Production
2580 99-1440 Hydraulic Production
2600 99-3220 Hydraulic Production
FE5901 99-1492 Hydraulic Production
5901 H99-1492 Hydraulic Production

* Note: Aluminum Only




Inspection Data

Dia. A max B max C max
3/16 1/16 1/32 .050
1/4 1/8 3/32 .100
5/16 3/16 9/64 .100
3/8 1/4 11/64 .100