Built for repeatable fastening on production assemblies, the Cleco 35STHFC404 Shut-Off Pulse Tool delivers a 1226 ft-lbs torque range with a 1/2″ square drive for socket-based work on M5 to M8 fasteners. Its hydraulic pulse shut-off system (a fluid-driven pulse mechanism that stops the tool at the preset torque) helps reduce reaction force compared with conventional impact tools, making it useful for repeated fastening where control, consistency, and operator handling all matter.The inline lever configuration keeps the tool aligned with the fastener for straight rundown, while the 4,000 RPM free speed supports fast cycle times in assembly cells and manufacturing workstations. With external torque adjustment, external speed control, reversible operation, and oilless blades, the 35STHFC404 gives production teams a compact C-Series pulse tool for controlled tightening and fastener removal without having to move up to a larger pistol-grip model.Type: Hydraulic Pulse Tool | Series: C-Series STHFC & STHF | Model: 35STHFC404 | Grip Type: Inline Lever | Drive Size: 1/2″ | Drive Type: Square Drive | Torque Range: 1226 ft-lbs / 1535 Nm | Free Speed: 4,000 RPM | Weight: 3.3 lbs / 1.5 kg | Air Inlet: 1/4″ NPT | Minimum Hose I.D.: 3/8″ | Air Consumption: 15.9 SCFM | Rated Air Pressure: 87 PSI / 6 bar | Bolt Size Range: M5M8 / #103/8″Features:Hydraulic pulse shut-off helps stop the tool at the preset torque for controlled fastening.Motor governor equipped to help regulate rundown speed during use.External torque adjustment allows setup changes without disassembling the tool.External speed control helps tune the tool to the joint and fastener condition.Reversible operation supports both tightening and fastener removal.Oilless blades help reduce the need for internal lubrication, resulting in cleaner assembly areas.Inline lever start provides responsive control while keeping the tool in line with the fastener.Standard equipment includes suspension bail and torque adjusting wrench.Made in USA: Applications:Automotive and transportation assembly fastening brackets, covers, housings, and small structural components.General manufacturing stations tightening M5 to M8 fasteners with controlled torque output.Appliance and equipment assembly where an inline tool can help maintain fastener alignment during repetitive work.Industrial maintenance cells using 1/2″ drive sockets for controlled removal and reassembly tasks.Suspended tool setups where the included suspension bail helps manage tool weight over repeated cycles.FAQs:Q: What does hydraulic pulse shut-off do?A: Hydraulic pulse shut-off delivers torque through a pulse unit and stops the tool when the preset torque is reached. This helps limit reaction force and supports more repeatable fastening than a non-shut-off pulse tool.Q: What fastener sizes does the Cleco 35STHFC404 cover?A: The C-Series STHFC and STHF range is listed for M5 to M8 fasteners, or #10 to 3/8″ bolt sizes. Final tool selection should still be matched to the joint, torque target, and socket requirements.Q: What sockets fit this model?A: The 35STHFC404 uses a 1/2″ square drive, so it accepts compatible 1/2″ drive impact-rated sockets. It is not the quick change version; buyers needing a 7/16″ quick change output should review the related 35STHFC40Q model.Q: Can the torque and speed be adjusted?A: Yes. This model includes external torque adjustment and external speed control. Torque should be verified with proper test equipment before being released for production use.Q: What air setup is required?A: The tool is rated at 87 PSI / 6 bar and lists 15.9 SCFM air consumption with a 1/4″ NPT air inlet and 3/8″ minimum hose I.D. A properly sized air line and FRL help maintain stable performance during repeated fastening cycles. .spec-accordion{width:100%;max-width:1200px;margin:1em auto;font-family:”Montserrat”,Arial,sans-serif;box-sizing:border-box} .spec-accordion *{box-sizing:border-box} .spec-accordion-toggle{width:100%;display:flex;justify-content:center;align-items:center;position:relative;background:#444;color:#fff;border:0;padding:14px 48px;font-family:”Bai Jamjuree”,Arial,sans-serif;font-size:16px;font-weight:700;text-transform:uppercase;cursor:pointer;text-align:center} .spec-accordion-toggle::after{content:”+”;font-size:22px;position:absolute;right:18px} .spec-accordion.open .spec-accordion-toggle::after{content:””} .spec-accordion-panel{display:none!important;width:100%;padding:16px 0 0} .spec-accordion.open .spec-accordion-panel{display:block!important} .spec-accordion-panel[hidden],.spec-accordion:not(.open) .spec-accordion-panel{display:none!important} .spec-table-wrapper{width:100%;max-width:1200px;margin:0 auto;overflow-x:auto;overflow-y:hidden;-webkit-overflow-scrolling:touch} .spec-table{width:100%!important;max-width:1200px;min-width:100%;margin:0 auto;border-collapse:collapse;table-layout:auto;font-family:”Montserrat”,Arial,sans-serif;font-size:12px;color:#000} .spec-table th{background:#444;color:#fff;text-transform:uppercase;font-family:”Bai Jamjuree”,Arial,sans-serif;font-weight:700;font-size:11px;padding:8px 6px;border:1px solid #ddd;text-align:center;line-height:1.15;white-space:nowrap} .spec-table td{padding:6px;border:1px solid #eee;text-align:center;line-height:1.15;white-space:nowrap} .spec-table .long-text{white-space:normal} .spec-table tbody tr:nth-child(even){background:#f7f7f7} .spec-table tbody tr:hover{background:#e5e5e5} .spec-table a{color:#0066cc;text-decoration:none;font-weight:600;background:transparent;padding:0;border-radius:0;box-shadow:none} .spec-table a:hover{text-decoration:underline} .group-row td{background:#444;color:#fff;font-family:”Bai Jamjuree”,Arial,sans-serif;font-weight:700;text-transform:uppercase;text-align:left} @media(max-width:640px){.spec-accordion,.spec-table-wrapper,.spec-table{width:100%;max-width:100%}.spec-accordion-toggle{font-size:14px;padding:13px 48px}} .spec-accordion.is-mobile-table .spec-table-wrapper{overflow-x:visible!important;overflow-y:visible} .spec-accordion.is-mobile-table .spec-table{width:100%;max-width:100%;min-width:0!important;border:0} .spec-accordion.is-mobile-table .spec-table thead{display:none!important} .spec-accordion.is-mobile-table .spec-table,.spec-accordion.is-mobile-table .spec-table tbody,.spec-accordion.is-mobile-table .spec-table tr,.spec-accordion.is-mobile-table .spec-table td{display:block;width:100%} .spec-accordion.is-mobile-table .spec-table tr{margin-bottom:14px;border:1px solid #ddd;background:#fff} .spec-accordion.is-mobile-table .spec-table tbody tr:nth-child(even),.spec-accordion.is-mobile-table .spec-table tbody tr:hover{background:#fff} .spec-accordion.is-mobile-table .spec-table th,.spec-accordion.is-mobile-table .spec-table td{white-space:normal!important} .spec-accordion.is-mobile-table .spec-table td{display:flex;justify-content:space-between;gap:14px;text-align:right;border:0;border-bottom:1px solid #eee;padding:10px 12px;font-size:13px;word-break:break-word} .spec-accordion.is-mobile-table .spec-table td::before{content:attr(data-label);font-weight:700;text-transform:uppercase;color:#444;text-align:left;flex:0 0 46%} .spec-accordion.is-mobile-table .spec-table td>a{word-break:break-word;background:transparent} .spec-accordion.is-mobile-table .group-row td{text-align:center;background:#444;color:#fff} .spec-accordion.is-mobile-table .group-row td::before{content:none} Available Variations and SpecificationsSKUOutput DriveTorque RangeFree SpeedWeightAir ConsumptionMin Ft LbMax Ft LbMin NmMax Nmr/minLbNPTHose I.D.Scfm15STHC40Q1/4 Quick Change51530002.431/43/80.115STHFC40Q1/4 Quick Change3.61151540002.431/43/80.135STHFC4041/2 Square Drive1226123540003.311/43/81.535STHFC40Q7/16 Quick Change1226153540003.311/43/81.57STHFC55Q1/4 Quick Change1.94.92.66.655002.051/83/87 (function(){ function initSpecAccordions(){ document.querySelectorAll(“.spec-accordion”).forEach(function(a){ if(a.dataset.specAccordionInit===”true”)return;a.dataset.specAccordionInit=”true”; var b=a.querySelector(“.spec-accordion-toggle”),p=a.querySelector(“.spec-accordion-panel”);if(!b||!p)return; var u=false; function m(){return(a.getBoundingClientRect().width||window.innerWidth)
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