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256
Model 256 pneudraulic installation tool · Installation tool · Huck
256 installs NAS shear pull-type lockbolt -5, -6, -8, -10, -12 with nose 99-2552S, 99-2553S, 99-2558, 99-2559, 99-2954, 99-2564, 99-2565, 99-2952, 99-2567, 99-2568, 99-2953, 99-2570, 99-2571 or 99-2957.
Everything it installs1 fastener group
NAS shear pull-type lockbolt (pin and collar) -5, -6, -8, -10, -12, per the Huck catalog
- 99-2552S99-2553S(-5)on246256Huck 2010 catalog p.47 ↗
- 99-255899-255999-2954(-6)on246256Huck 2010 catalog p.47 ↗
- 99-256499-256599-2952(-8)on246256Huck 2010 catalog p.47 ↗
- 99-256799-256899-2953(-10)on246256Huck 2010 catalog p.47 ↗
- 99-1720DGC(-10)on246256+ adapter122134Huck 2010 catalog p.47 ↗
- 99-257099-257199-2957(-12)on246256Huck 2010 catalog p.47 ↗
- 99-1756DG(-12)on246256+ adapter122134Huck 2010 catalog p.47 ↗
Fastener process documents that name it3
- Huck BOM (industrial) -6, -8, -10, -12 Howmet Huck BOM brochure p.6 ↗
- Huck Magna-Lok (industrial) -6, -8, -12 Howmet Huck Magna-Lok brochure p.7 ↗
- Huck Magna-Grip (industrial) -6, -8, -10, -12 Howmet Huck Magna-Grip brochure p.7 ↗
Other brands' equivalents1 statement
- Gage Bilt says GB756 replaces 256 (Huck) Gage Bilt 2017 p.106 ↗
Gage Bilt's cross-reference lists GB756 (installation tool) for 256.
Sources5
- Huck Aerospace Installation Equipment catalog (Jan 2010, archived), p.47, Model 246/56, Standard Inline & Offset Nose Assemblies ↗
- Model 246/56, Standard Inline & Offset Nose Assemblies.
- Model 246/56, Standard Inline & Offset Nose Assemblies. "Requires Adapter Part Number 122134. No Stroke Limiter Needed".
- Howmet Huck BOM brochure, p.6, Tooling Weight and Dimensions ↗
- Howmet Huck Magna-Lok brochure, p.7, Tooling Weight and Dimensions ↗
- Howmet Huck Magna-Grip brochure, p.7, Tooling Weight and Dimensions ↗
- Gage Bilt Aerospace Catalog 2017 (archived; pages are PDF pages), p.106, Other - Gage Bilt Cross Reference, page 1 ↗
Tool catalogs are the manufacturers' as published in the cited edition; confirm current PNs with the tool maker before purchase. Install per the OEM process specification.
Published dimensions16 · for envelope CAD
| Feature | Value | As printed | Source |
|---|---|---|---|
| Stroke | 0.875 in | Stroke: .875 in | Huck Aerospace Installation Equipment catalog (Jan 2010, archived), p.96, 256 Series Tooling specifications ↗ |
| Weight | 11.1 lb | Weight: 11.1 lbs | Huck Aerospace Installation Equipment catalog (Jan 2010, archived), p.96, 256 Series Tooling specifications ↗ |
| Air consumption | 22.4 scfm | Air Consumption: 22.4 SCFM | Huck Aerospace Installation Equipment catalog (Jan 2010, archived), p.96, 256 Series Tooling specifications ↗ |
| Pull force | 9986 lbf | Capacity: 9986 lbs @ 90 psi | Huck Aerospace Installation Equipment catalog (Jan 2010, archived), p.96, 256 Series Tooling specifications ↗ |
As printed in the fastener process documents
- Length: 7.9 (Huck BOM (industrial), Howmet Huck BOM brochure, p.6, Tooling Weight and Dimensions ↗)
- Height: 14.9 (Huck BOM (industrial), Howmet Huck BOM brochure, p.6, Tooling Weight and Dimensions ↗)
- Width: 6.3 (Huck BOM (industrial), Howmet Huck BOM brochure, p.6, Tooling Weight and Dimensions ↗)
- Weight: 11.1 (Huck BOM (industrial), Howmet Huck BOM brochure, p.6, Tooling Weight and Dimensions ↗)
- Length: 7.8" (Huck Magna-Lok (industrial), Howmet Huck Magna-Lok brochure, p.7, Tooling Weight and Dimensions ↗)
- Height: 14.9" (Huck Magna-Lok (industrial), Howmet Huck Magna-Lok brochure, p.7, Tooling Weight and Dimensions ↗)
- Width: 6.1" (Huck Magna-Lok (industrial), Howmet Huck Magna-Lok brochure, p.7, Tooling Weight and Dimensions ↗)
- Weight: 11.1 lbs (Huck Magna-Lok (industrial), Howmet Huck Magna-Lok brochure, p.7, Tooling Weight and Dimensions ↗)
- Length: 7.8" (Huck Magna-Grip (industrial), Howmet Huck Magna-Grip brochure, p.7, Tooling Weight and Dimensions ↗)
- Height: 14.9" (Huck Magna-Grip (industrial), Howmet Huck Magna-Grip brochure, p.7, Tooling Weight and Dimensions ↗)
- Width: 6.1" (Huck Magna-Grip (industrial), Howmet Huck Magna-Grip brochure, p.7, Tooling Weight and Dimensions ↗)
- Weight: 11.1 lbs (Huck Magna-Grip (industrial), Howmet Huck Magna-Grip brochure, p.7, Tooling Weight and Dimensions ↗)
Only dimensions a document prints are listed, with the feature each one measures. None of these catalogs publishes nose tip or anvil geometry detailed enough to machine from.
Reference only: the controlling drawing, its process spec and the manufacturer's installation instructions govern. How to use these answers
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